feat: Add Markdown languages

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -0,0 +1,81 @@
+name: "\U0001F41E Report a problem"
+description: "Report something that isn't working the way you expected."
+title: "Bug: (fill in)"
+labels:
+    - bug
+    - "repro:needed"
+body:
+    - type: markdown
+      attributes:
+          value: By opening an issue, you agree to abide by the [OpenJS Foundation Code of Conduct](https://eslint.org/conduct).
+    - type: textarea
+      attributes:
+          label: Environment
+          description: |
+              Please tell us about how you're running ESLint (Run `npx eslint --env-info`.)
+          value: |
+              ESLint version:
+              @eslint/markdown version:
+              Node version:
+              npm version:
+              Operating System:
+      validations:
+          required: true
+    - type: dropdown
+      attributes:
+          label: Which language are you using?
+          description: |
+              Just tell us which language mode you're using.
+          options:
+              - commonmark
+              - gfm
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What did you do?
+          description: |
+              Please include a *minimal* reproduction case.
+          value: |
+              <details>
+              <summary>Configuration</summary>
+
+              ```
+              <!-- Paste your configuration here -->
+              ```
+              </details>
+
+              ```js
+              <!-- Paste your code here -->
+              ```
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What did you expect to happen?
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What actually happened?
+          description: |
+              Please copy-paste the actual ESLint output.
+      validations:
+          required: true
+    - type: input
+      attributes:
+          label: Link to Minimal Reproducible Example
+          description: "Link to a [StackBlitz](https://stackblitz.com) or GitHub repo with a minimal reproduction of the problem. **A minimal reproduction is required** so that others can help debug your issue. If a report is vague (e.g. just a generic error message) and has no reproduction, it may be auto-closed."
+          placeholder: "https://stackblitz.com/abcd1234"
+      validations:
+          required: true
+    - type: checkboxes
+      attributes:
+          label: Participation
+          options:
+              - label: I am willing to submit a pull request for this issue.
+                required: false
+    - type: textarea
+      attributes:
+          label: Additional comments
+          description: Is there anything else that's important for the team to know?

.github/ISSUE_TEMPLATE/change.yml

@@ -0,0 +1,51 @@
+name: "\U0001F680 Request a change (not rule-related)"
+description: "Request a change that is not a bug fix, rule change, or new rule"
+title: "Change Request: (fill in)"
+labels:
+    - enhancement
+    - core
+body:
+    - type: markdown
+      attributes:
+          value: By opening an issue, you agree to abide by the [OpenJS Foundation Code of Conduct](https://eslint.org/conduct).
+    - type: textarea
+      attributes:
+          label: Environment
+          description: |
+              Please tell us about how you're running ESLint (Run `npx eslint --env-info`.)
+          value: |
+              ESLint version:
+              @eslint/markdown version:
+              Node version:
+              npm version:
+              Operating System:
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What problem do you want to solve?
+          description: |
+              Please explain your use case in as much detail as possible.
+          placeholder: |
+              The Markdown plugin currently...
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What do you think is the correct solution?
+          description: |
+              Please explain how you'd like to change the Markdown plugin to address the problem.
+          placeholder: |
+              I'd like the Markdown plugin to...
+      validations:
+          required: true
+    - type: checkboxes
+      attributes:
+          label: Participation
+          options:
+              - label: I am willing to submit a pull request for this change.
+                required: false
+    - type: textarea
+      attributes:
+          label: Additional comments
+          description: Is there anything else that's important for the team to know?

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,11 @@
+blank_issues_enabled: false
+contact_links:
+    - name: 🐛 Report a Parsing Error
+      url: https://github.com/syntax-tree/mdast-util-from-markdown/issues/new/choose
+      about: File an issue with the parser that this plugin uses
+    - name: 🗣 Ask a Question, Discuss
+      url: https://github.com/eslint/markdown/discussions
+      about: Get help using this plugin
+    - name: Discord Server
+      url: https://eslint.org/chat
+      about: Talk with the team

.github/ISSUE_TEMPLATE/docs.yml

@@ -0,0 +1,46 @@
+name: "\U0001F4DD Docs"
+description: "Request an improvement to documentation"
+title: "Docs: (fill in)"
+labels:
+    - documentation
+body:
+    - type: markdown
+      attributes:
+          value: By opening an issue, you agree to abide by the [OpenJS Foundation Code of Conduct](https://eslint.org/conduct).
+    - type: textarea
+      attributes:
+          label: Docs page(s)
+          description: |
+              What page(s) are you suggesting be changed or created?
+          placeholder: |
+              e.g. https://eslint.org/docs/latest/use/getting-started
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What documentation issue do you want to solve?
+          description: |
+              Please explain your issue in as much detail as possible.
+          placeholder: |
+              The docs currently...
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What do you think is the correct solution?
+          description: |
+              Please explain how you'd like to change the docs to address the problem.
+          placeholder: |
+              I'd like the docs to...
+      validations:
+          required: true
+    - type: checkboxes
+      attributes:
+          label: Participation
+          options:
+              - label: I am willing to submit a pull request for this change.
+                required: false
+    - type: textarea
+      attributes:
+          label: Additional comments
+          description: Is there anything else that's important for the team to know?

.github/ISSUE_TEMPLATE/new-rule.yml

@@ -0,0 +1,41 @@
+name: "\U0001F680 Propose a new rule"
+description: "Propose a new rule to be added to the plugin"
+title: "New Rule: (fill in)"
+labels:
+    - rule
+    - feature
+body:
+    - type: markdown
+      attributes:
+          value: By opening an issue, you agree to abide by the [OpenJS Foundation Code of Conduct](https://eslint.org/conduct).
+    - type: input
+      attributes:
+          label: Rule details
+          description: What should the new rule do?
+      validations:
+          required: true
+    - type: dropdown
+      attributes:
+          label: What type of rule is this?
+          options:
+              - Warns about a potential problem
+              - Suggests an alternate way of doing something
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: Example code
+          description: Please provide some example code that this rule will warn about.
+          render: markdown
+      validations:
+          required: true
+    - type: checkboxes
+      attributes:
+          label: Participation
+          options:
+              - label: I am willing to submit a pull request to implement this rule.
+                required: false
+    - type: textarea
+      attributes:
+          label: Additional comments
+          description: Is there anything else that's important for the team to know?

.github/ISSUE_TEMPLATE/rule-change.yml

@@ -0,0 +1,61 @@
+name: "\U0001F4DD Request a rule change"
+description: "Request a change to an existing rule"
+title: "Rule Change: (fill in)"
+labels:
+    - enhancement
+    - rule
+body:
+    - type: markdown
+      attributes:
+          value: By opening an issue, you agree to abide by the [OpenJS Foundation Code of Conduct](https://eslint.org/conduct).
+    - type: input
+      attributes:
+          label: What rule do you want to change?
+      validations:
+          required: true
+    - type: dropdown
+      attributes:
+          label: What change do you want to make?
+          options:
+              - Generate more warnings
+              - Generate fewer warnings
+              - Implement autofix
+              - Implement suggestions
+      validations:
+          required: true
+    - type: dropdown
+      attributes:
+          label: How do you think the change should be implemented?
+          options:
+              - A new option
+              - A new default behavior
+              - Other
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: Example code
+          description: Please provide some example code that this change will affect.
+          render: markdown
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What does the rule currently do for this code?
+      validations:
+          required: true
+    - type: textarea
+      attributes:
+          label: What will the rule do after it's changed?
+      validations:
+          required: true
+    - type: checkboxes
+      attributes:
+          label: Participation
+          options:
+              - label: I am willing to submit a pull request to implement this change.
+                required: false
+    - type: textarea
+      attributes:
+          label: Additional comments
+          description: Is there anything else that's important for the team to know?

.gitignore

@@ -9,3 +9,4 @@ yarn.lock
 package-lock.json
 pnpm-lock.yaml
 dist
+src/build