feat: add commitlint linter

Signed-off-by: Christian Walter <christian.walter@9elements.com>

.commitlintrc.yml

@@ -0,0 +1,19 @@
+# Configuration for commitlint
+---
+# Basic set of roules taken from https://github.com/conventional-changelog/commitlint/tree/master/%40commitlint/config-conventional
+extends:
+  - "@commitlint/config-conventional"
+# Override type-enum to just use types, which are relevant to this project
+rules:
+  type-enum:
+    - 2
+    - always
+    - - build
+      - chore
+      - ci
+      - docs
+      - feat
+      - fix
+      - refactor
+      - revert
+      - test

.github/workflows/golangci-lint.yml

@@ -1,4 +1,4 @@
-name: golangci-lint
+name: linter
 on:
   push:
     tags:
@@ -17,4 +17,12 @@ jobs:
         uses: golangci/golangci-lint-action@v4
         with:
           version: latest
-          working-directory: pkg
+          working-directory: pkg
+
+  commitlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: wagoid/commitlint-github-action@v5