chore(gh-actions): add new GitHub action to mark issues stale after 6…

…0 days of inactivity and close after 30 days

.github/workflows/stale.yml

@@ -0,0 +1,24 @@
+name: Close stale issues
+
+on:
+  schedule:
+    - cron: "38 1 * * *"
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  close-issues:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          days-before-issue-stale: 60
+          days-before-issue-close: 30
+          stale-issue-label: "stale"
+          stale-issue-message: "This issue is stale because it has been open for 60 days with no activity."
+          close-issue-message: "This issue was closed because it has been inactive for 30 days since being marked as stale."
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          repo-token: ${{ secrets.GITHUB_TOKEN }}