adding an action to tag and auto close issues and PRs if stale

.github/workflows/close-stale-issues.yaml

@@ -0,0 +1,24 @@
+name: 'Close stale issues and PRs'
+
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+      issues: write
+      pull-requests: write
+
+    steps:
+      - uses: actions/stale@v9
+        with:
+          stale-issue-message: 'This issue has been marked as stale due to inactivity. It will be closed if no further activity occurs. Thank you for your contributions.'
+          stale-pr-message: 'This pull request has been marked as stale due to inactivity. It will be closed if no further activity occurs. Thank you for your contributions.'
+          days-before-issue-stale: 90
+          days-before-pr-stale: 60
+          days-before-close: 7
+          stale-issue-label: 'stale'