ci: add GitHub workflow to enforce conventional commit PR titles

.github/workflows/auto-approve.yml

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+name: Auto-approve PR
+on:
+  pull_request_target:
+    types: [ opened, synchronize ]
+  pull_request:
+    types: [ opened, synchronize ]
+
+jobs:
+  auto-approve:
+    if: github.actor == 'dorthrithil'
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Auto-approve
+        uses: hmarr/auto-approve-action@v3
+        with:
+          github-token: ${{ secrets.LC_BOT_PAT }}

.github/workflows/commitlint.yml

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+# Enforces that the PR title follows the Conventional Commits specification
+# https://www.conventionalcommits.org/en/v1.0.0/
+# The PR title is used as the commit message when squashing PRs (requires specific GitHub settings)
+
+name: "Conventional Commits PR Title"
+
+on:
+  pull_request:
+    branches:
+      - next
+    types:
+      - synchronize
+      - opened
+      - edited
+      - ready_for_review
+
+jobs:
+  check_squash_commit:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout PR branch
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Extract PR title as squash commit message
+        run: echo "${{ github.event.pull_request.title }}" > squash_commit_message.txt
+
+      - name: Install commitlint
+        run: npm install @commitlint/{config-conventional,cli}
+
+      - name: Validate PR title as squash commit message
+        run: |
+          echo "${{ github.event.pull_request.title }}" | npx commitlint --verbose

commitlint.config.js

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+module.exports = {
+  extends: ['@commitlint/config-conventional'],
+};