chore: github action for comment rebase (#5455)

.github/workflows/rebase.yml

@@ -0,0 +1,14 @@
+on:
+  issue_comment:
+    types: [created]
+name: Automatic Rebase
+jobs:
+  rebase:
+    name: Rebase
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: Automatic Rebase
+      uses: cirrus-actions/rebase@master
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}