chore: add pull request title lint step (algolia#53)

* chore: add pr title lint step * chore: update trigger condition

Author: VladislavFitz

.github/workflows/lint_pr.yml

@@ -0,0 +1,13 @@
+name: "Lint PR"
+
+on:
+ pull_request:
+
+jobs:
+ main:
+ name: Validate PR title
+ runs-on: ubuntu-latest
+ steps:
+ - uses: amannn/action-semantic-pull-request@v5
+ env:
+ GITHUB_TOKEN: ${{ secrets.GH_PERSONAL_ACCESS_TOKEN }}