Implement mergify

.github/mergify.yml

@@ -1,17 +1,25 @@
 queue_rules:
   - name: default
     conditions:
-      - label=ci:mergify
+      - base=main
+      - label=ci:ready_to_merge
 
 
 pull_request_rules:
   - name: push to default merge queue
     conditions:
       - base=main
-      - label=ci:mergify
-      - check-success=cla/google
+      - label=ci:ready_to_merge
     actions:
       queue:
         name: default
         require_branch_protection: true
         method: squash
+
+  - name: remove ci:ready_to_merge label
+    conditions:
+      - merged
+    actions:
+      label:
+        remove:
+          - ci:ready_to_merge

.github/workflows/apply_cirun.yml

@@ -0,0 +1,19 @@
+on:
+  pull_request_target:
+    types: [synchronize]
+
+jobs:
+  apply-label:
+    runs-on: ubuntu-latest
+    if: contains(github.event.pull_request.labels.*.name, 'ci:ready_to_merge')
+    steps:
+      - uses: actions/github-script@v5
+        with:
+          github-token: ${{ secrets.TFLM_BOT_REPO_TOKEN }} 
+          script: |
+            github.rest.issues.addLabels({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              labels: ['ci:run']
+            })