feat(workflows): Ensure that PR titles conform to the conventional co…

…mmits spec (#37)

Note that we probably want to [default to PR titles for squash merge
commit
messages](https://github.blog/changelog/2022-05-11-default-to-pr-titles-for-squash-merge-commit-messages/)
on repositories that use this.

![Screenshot 2024-06-03 at 10 47
51](https://github.com/hedia-team/.github/assets/1035167/b06e926e-8dbd-4822-b396-a9f58d6a60c3)

.github/workflows/lint-pr.yml

@@ -0,0 +1,21 @@
+name: Pull Request
+
+on:
+  pull_request:
+    types:
+      - opened
+      - edited
+      - synchronize
+  workflow_call:
+
+permissions:
+  pull-requests: read
+
+jobs:
+  title:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check that title follows Conventional Commits spec
+        uses: amannn/action-semantic-pull-request@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}