actions: creates an action to enable collatorators to rebase others pull requests easily

simply respond '/rebase' on a PR and (assuming PR creater allows repo collaborators to push), it will be rebased on the latest develop. I believe this will be useful in the case of trivial rebases that are sometimes needed on a PR

Signed-off-by: pasta <[email protected]>

Author: PastaPastaPasta

.github/workflows/rebase.yml

@@ -0,0 +1,32 @@
+name: Automatic Rebase
+on:
+  issue_comment:
+    types: [created]
+permissions:
+  contents: write
+#  pull-requests: write
+  # Enforce other not needed permissions are off
+#  actions: none
+#  checks: none
+#  deployments: none
+#  issues: none
+#  #metadata: read
+#  packages: none
+#  repository-projects: none
+#  security-events: none
+#  statuses: none
+jobs:
+  rebase:
+    name: Rebase
+    if: (github.event.comment.author_association == 'COLLABORATOR' || github.event.comment.author_association == 'OWNER') && github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the latest code
+        uses: actions/checkout@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          fetch-depth: 0 # otherwise, you will fail to push refs to dest repo
+      - name: Automatic Rebase
+        uses: PastaPastaPasta/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}