chore: update PR title workflow to Conventional Commit style (shopwar…

…e#5893)

.github/PULL_REQUEST_TEMPLATE.md

@@ -17,11 +17,16 @@ Please create a second pull request at https://github.com/shopware/docs
 
 
 ### 4. Please link to the relevant issues (if any).
+<!-- Examples:
+- closes #123  - closes the issue #123 when the PR is merged
+- relates #123 - relates to the issue #123
 
+In case of issue existing only on Jira, link to the Jira issue.
+- Jira issue: https://shopware.atlassian.net/browse/NEXT-123
+-->
 
 ### 5. Checklist
 
-- [ ] I have rebased my changes to remove merge conflicts
 - [ ] I have written tests and verified that they fail without my change
 - [ ] I have created a [changelog file](https://github.com/shopware/platform/blob/trunk/adr/2020-08-03-implement-new-changelog.md) with all necessary information about my changes
 - [ ] I have written or adjusted the documentation according to my changes

.github/workflows/check-pr-title.yml

@@ -0,0 +1,21 @@
+name: Check PR title
+# This workflow checks the PR title for semantic meaning
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - edited
+      - synchronize
+
+permissions:
+  pull-requests: read
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}