ci: contributor guidelines

.github/workflows/contributor-advice.yml

@@ -0,0 +1,20 @@
+name: Contributor advice
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  contributor-advice:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Add contributor advice
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          issue-number: 5057
+          body: |
+            This is a multi-line test comment
+            - With GitHub **Markdown** :sparkles:
+            - Created by [create-or-update-comment][1]
+
+            [1]: https://github.com/peter-evans/create-or-update-commentgap