Create stale.yml

Author: Utkarsh1504

.github/workflows/stale.yml

@@ -0,0 +1,9 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '0 0 * * *'
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v4