chore: add conventional commit PR title linter (#7583)

* chore: add conventional commit PR title linter

* chore: clearer job name

* chore: different config file format

* chore: format

---------

Co-authored-by: Netlify <[email protected]>

Author: sarahetter

.commitlintrc.json

@@ -0,0 +1,13 @@
+name: PR Title - Conventional Commit
+on:
+  pull_request:
+    types: ['opened', 'edited', 'reopened', 'synchronize']
+
+jobs:
+  lint-title:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Dependencies
+        run: npm install @commitlint/config-conventional
+      - uses: JulienKode/[email protected]

.github/workflows/conventional-commit.yml

@@ -0,0 +1 @@
+export default { extends: ['@commitlint/config-conventional'] }