Setup haml-lint CI with todo config (#23524)

.github/workflows/haml-lint-problem-matcher.json

@@ -0,0 +1,17 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "haml-lint",
+      "severity": "warning",
+      "pattern": [
+        {
+          "regexp": "^(.*):(\\d+)\\s\\[W]\\s(.*):\\s(.*)$",
+          "file": 1,
+          "line": 2,
+          "code": 3,
+          "message": 4
+        }
+      ]
+    }
+  ]
+}

.github/workflows/lint-haml.yml

@@ -0,0 +1,44 @@
+name: Haml Linting
+on:
+  push:
+    branches-ignore:
+      - 'dependabot/**'
+    paths:
+      - '.github/workflows/haml-lint-problem-matcher.json'
+      - '.github/workflows/lint-haml.yml'
+      - '.haml-lint*.yml'
+      - '.rubocop*.yml'
+      - '.ruby-version'
+      - '**/*.haml'
+      - 'Gemfile*'
+
+  pull_request:
+    paths:
+      - '.github/workflows/haml-lint-problem-matcher.json'
+      - '.github/workflows/lint-haml.yml'
+      - '.haml-lint*.yml'
+      - '.rubocop*.yml'
+      - '.ruby-version'
+      - '**/*.haml'
+      - 'Gemfile*'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v3
+
+      - name: Install native Ruby dependencies
+        run: sudo apt-get install -y libicu-dev libidn11-dev
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: .ruby-version
+          bundler-cache: true
+
+      - name: Run haml-lint
+        run: |
+          echo "::add-matcher::.github/workflows/haml-lint-problem-matcher.json"
+          bundle exec haml-lint