revert .github

Signed-off-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

Author: youtalk

.github/workflows/beta-to-tier4-main-sync.yaml

@@ -1,27 +1,25 @@
 name: comment-on-pr
-
 on:
-  pull_request:
-    types:
-      - opened
-    branches:
-      - beta/v0.[0-9]+.[1-9]+
+  pull_request_target:
 
 jobs:
   comment-on-pr:
     runs-on: ubuntu-22.04
     permissions:
       pull-requests: write
     steps:
-      - name: Create comments
-        run: |
-          cat << EOF > comments
-          ### Merging guidelines for the beta branch
-          Please use `Squash and merge` as the default.
-          However, when incorporating multiple changes with cherry-pick, use a `Create a merge commit` to preserve the changes in the history.
-          EOF
-      - name: Post comments
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          URL: ${{ github.event.pull_request.html_url }}
-        run: gh pr comment -F ./comments "${URL}"
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Initial PR comment
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          message: |
+            Thank you for contributing to the Autoware project!
+
+            🚧 If your pull request is in progress, [switch it to draft mode](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request#converting-a-pull-request-to-a-draft).
+
+            Please ensure:
+            - You've checked our [contribution guidelines](https://autowarefoundation.github.io/autoware-documentation/main/contributing/).
+            - Your PR follows our [pull request guidelines](https://autowarefoundation.github.io/autoware-documentation/main/contributing/pull-request-guidelines/).
+            - All required CI checks pass before [marking the PR ready for review](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request#marking-a-pull-request-as-ready-for-review).