github: config: Add action to lint PR commits

.github/workflows/commitlint.yml

@@ -0,0 +1,18 @@
+name: Commitlint
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_TOKEN: ${{ secrets.TOKEN }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 20
+      - uses: wagoid/commitlint-github-action@v1.6.0
+        with:
+          configFile: ./commitlint.config.js

commitlint.config.js

@@ -0,0 +1,45 @@
+module.exports = {
+    parserPreset: '@commitlint/config-conventional',
+    rules: {
+        'body-leading-blank': [1, 'always'],
+        'header-max-length': [2, 'always', 50],
+        'body-max-line-length': [2, 'always', 72],
+        'footer-max-line-length': [2, 'always', 72],
+        'footer-leading-blank': [1, 'always'],
+        'scope-max-length': [2, 'always', 0],
+        'subject-case': [
+            2,
+            'always',
+            ['sentence-case', 'lower-case']
+        ],
+        'subject-empty': [2, 'never'],
+        'subject-full-stop': [2, 'never', '.'],
+        'signed-off-by': [2, 'never'],
+        'type-case': [2, 'always', 'lower-case'],
+        'type-empty': [2, 'never'],
+        'type-enum': [
+            2,
+            'always',
+            [
+                'build',
+                'chore',
+                'ci',
+                'docs',
+                'feat',
+                'fix',
+                'perf',
+                'refactor',
+                'revert',
+                'style',
+                'test',
+                'thing',
+                'user',
+                'amqp',
+                'handler',
+                'server',
+                'config',
+                'github',
+            ]
+        ]
+    }
+};