feat: add commitlint action (#23)

Author: ateoi

.commitlintrc.json

@@ -0,0 +1,26 @@
+{
+  "rules": {
+    "header-max-length": [
+      2,
+      "always",
+      72
+    ],
+    "type-enum": [
+      2,
+      "always",
+      [
+        "docs",
+        "feat",
+        "fix",
+        "refactor",
+        "revert",
+        "style",
+        "test"
+      ]
+    ],
+    "type-empty": [
+      2,
+      "never"
+    ]
+  }
+}

.github/workflows/commitlint.yml

@@ -0,0 +1,25 @@
+name: CI
+on: [push, pull_request]
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install commitlint
+        run: |
+          npm install conventional-changelog-conventionalcommits
+          npm install commitlint@latest
+      - name: Print versions
+        run: |
+          git --version
+          node --version
+          npm --version
+          npx commitlint --version
+      - name: Validate current commit (last commit) with commitlint
+        if: github.event_name == 'push'
+        run: npx commitlint --from HEAD~1 --to HEAD --verbose
+      - name: Validate PR commits with commitlint
+        if: github.event_name == 'pull_request'
+        run: npx commitlint --from ${{ github.event.pull_request.head.sha }}~${{ github.event.pull_request.commits }} --to ${{ github.event.pull_request.head.sha }} --verbose