Terraform linting CI workflow (#625)

* add steps following terraform install instructions

* add tf fmt check step

* add tf init, validate, and comment on PR steps

* add step ids, paths to terraform commands, job run triggers

.github/workflows/terraform_lint.yaml

@@ -0,0 +1,79 @@
+name: 'Terraform lint'
+# This workflow is responsible for running the Haztrak react client tests.
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'infra/**/*.tf'
+jobs:
+  check_terraform_fmt:
+    name: 'Terraform Format'
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./infra/gcp/dev
+    steps:
+      - name: 'Checkout'
+        uses: actions/checkout@v3
+
+      - name: 'install terraform dependencies'
+        run: |
+          sudo apt-get update && sudo apt-get install -y gnupg software-properties-common
+
+      - name: 'install hashicorp GPG key'
+        run: |
+          wget -O- https://apt.releases.hashicorp.com/gpg | \
+          gpg --dearmor | \
+          sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg
+
+      - name: 'add hashicorp repo'
+        run: |
+          echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] \
+          https://apt.releases.hashicorp.com $(lsb_release -cs) main" | \
+          sudo tee /etc/apt/sources.list.d/hashicorp.list
+
+      - name: 'update apt'
+        run: sudo apt update
+
+      - name: 'install terraform'
+        run: sudo apt-get install terraform
+
+      - name: 'Terraform Init'
+        id: init
+        run: terraform init -input=false -no-color
+
+      - name: 'terraform fmt'
+        id: fmt
+        run: terraform fmt -check -recursive ..
+
+      - name: 'Terraform Validate'
+        id: validate
+        run: terraform validate ..
+
+      - name: 'Comment on PR'
+        uses: actions/github-script@v6
+        if: github.event_name == 'pull_request'
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const output = `#### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\`
+            #### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\`
+            #### Terraform Validation 🤖\`${{ steps.validate.outcome }}\`
+            <details><summary>Validation Output</summary>
+
+            \`\`\`\n
+            ${{ steps.validate.outputs.stdout }}
+            \`\`\`
+
+            </details>
+
+            *Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\`, Working Directory: \`${{ env.tf_actions_working_dir }}\`, Workflow: \`${{ github.workflow }}\`*`;
+
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: output
+            })