Added Markdown scans and PR template #3

	name: markdown
	on:
	pull_request:
	paths:
	- '.github/workflows/markdown.yml'
	- '.github/markdownlint.json'
	- '.github/markdownlint.jsonc'
	- '*/.md'

	# Declare default permissions as read only.
	permissions: read-all

	jobs:
	lint:
	name: Lint markdown files
	runs-on: ubuntu-latest
	steps:
	- name: Harden Runner
	uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
	with:
	egress-policy: audit

	- name: Checkout devtools
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

	- name: Register markdownlint warning matcher
	run: \|
	echo "::add-matcher::.github/markdownlint.json"

	- name: Lint markdown files
	uses: avto-dev/markdown-lint@04d43ee9191307b50935a753da3b775ab695eceb # v1.5.0
	with:
	args: '*/.md'
	config: '.github/markdownlint.jsonc'
	ignore: 'third_party_licenses.md CHANGELOG.md'

	- name: Remove markdownlint warning matcher
	if: always()
	run: \|
	echo "::remove-matcher owner=markdownlint::"

	check-links:
	name: Check markdown links
	runs-on: ubuntu-latest
	steps:
	- name: Checkout devtools
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

	- name: Check links
	uses: gaurav-nelson/github-action-markdown-link-check@1b916f2cf6c36510a6059943104e3c42ce6c16bc # master
	# Checks all Markdown files, including those in subfolders,
	# as the PR may involve removing referenced Markdown files.
	with:
	use-quiet-mode: 'yes'
	use-verbose-mode: 'yes'
	base-branch: ${{ github.base_ref }}
	config-file: '.github/markdown-link-check.jsonc'

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