Add Yaml and MD linting

.github/workflows/coding-standards.yml

@@ -11,6 +11,40 @@ on:  # yamllint disable-line rule:truthy
 name: 🧹 Fix PHP coding standards
 
 jobs:
+  yaml-linting:
+    timeout-minutes: 4
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: read
+    steps:
+      - name: 📦 Check out the codebase
+        uses: actions/checkout@v4.1.6
+
+      - name: 🧐 Lint YAML files
+        uses: ibiqlik/action-yamllint@v3.1.1
+        with:
+          config_file: .github/.yamllint.yaml
+          file_or_dir: '.'
+          strict: true
+
+  markdown-linting:
+    timeout-minutes: 4
+    runs-on: ubuntu-latest
+    concurrency:
+      cancel-in-progress: true
+      group: markdown-linting-${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+    steps:
+      - name: 📦 Check out the codebase
+        uses: actions/checkout@v4.1.6
+
+      - name: 🧐 Lint Markdown files
+        uses: DavidAnson/markdownlint-cli2-action@v16.0.0
+        with:
+          globs: |
+            **/*.md
+            !CHANGELOG.md
+
   coding-standards:
     timeout-minutes: 4
     runs-on: ${{ matrix.os }}

.markdownlint.json

@@ -0,0 +1,7 @@
+{
+    "$schema": "https://raw.githubusercontent.com/DavidAnson/markdownlint/main/schema/markdownlint-config-schema.json",
+    "line-length": false,
+    "no-inline-html": false,
+    "first-line-h1": false,
+    "no-duplicate-heading": false
+}