chore: add a job that check that all other jobs are green on PR

.github/workflows/all-green.yml

@@ -0,0 +1,30 @@
+name: All Green
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  all-green:
+    runs-on: ubuntu-latest
+    permissions:
+      checks: read
+      contents: read
+    steps:
+      - uses: wechuli/allcheckspassed@e22f45a4f25f4cf821d1273705ac233355400db1
+        with:
+          delay: 10  # wait for this delay before starting
+          polling_interval: 1 # after a failure, how long do it wait before checking again
+          retries: 60  # how many retries before stopping 
+          checks_exclude: 'Bootstrap import analysis,require-checklist,Validate changelog'
+
+# Why some checks are excluded?
+#
+# - Bootstrap import analysis: TO BE ADDED (Success rate of 88% as of 2025-04-17)
+# - require-checklist: this job is triggered by a change on PR description, and already explcititly required
+# - Validate changelog: this job is triggered by a change on labels, and already explcititly required