ci: Add commitlint

JIRA: CPOUI5FOUNDATION-1152

Author: matz3

.github/workflows/commitlint.yml

@@ -0,0 +1,21 @@
+name: Commit Message Linting
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - uses: wagoid/commitlint-github-action@b948419dd99f3fd78a6548d48f94e3df7f6bf3ed # v6.2.1

.husky/commit-msg

@@ -0,0 +1 @@
+npm run lint:commit -- --edit "$1" # Lint currently edited commit message

commitlint.config.mjs

@@ -0,0 +1,35 @@
+export default {
+	extends: [
+		"@commitlint/config-conventional",
+	],
+	rules: {
+		"type-enum": [
+			2,
+			"always",
+			[
+				"build",
+				"ci",
+				"deps",
+				"docs",
+				"feat",
+				"fix",
+				"perf",
+				"refactor",
+				"release",
+				"revert",
+				"style",
+				"test",
+			],
+		],
+		"body-max-line-length": [2, "always", 160],
+		"footer-max-line-length": [0],
+		"subject-case": [
+			2, "always",
+			["sentence-case", "start-case", "pascal-case"],
+		],
+	},
+	ignores: [
+		// Ignore release commits, as their subject doesn't start with an uppercase letter
+		(message) => message.startsWith("release: v"),
+	],
+};