Add workflow to mark inactive issues

.github/workflows/close-inactive-issues.yml

@@ -0,0 +1,28 @@
+name: Close inactive issues
+on:
+  schedule:
+    - cron: "30 8 * * *"
+
+jobs:
+  close-issues:
+    runs-on: ubuntu-latest
+    env:
+      PR_DAYS_BEFORE_STALE: 60
+      PR_DAYS_BEFORE_CLOSE: 10
+      PR_STALE_LABEL: stale
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/stale@v9
+        with:
+          days-before-issue-stale: ${{ env.PR_DAYS_BEFORE_STALE }}
+          days-before-issue-close: ${{ env.PR_DAYS_BEFORE_CLOSE }}
+          stale-issue-label: ${{ env.PR_STALE_LABEL }}
+          stale-issue-message: "This issue is stale because it has been open for ${{ env.PR_DAYS_BEFORE_STALE }} days with no activity. Leave a comment to avoid closing this issue in ${{ env.PR_DAYS_BEFORE_CLOSE }} days."
+          close-issue-message: "This issue was closed because it has been inactive for ${{ env.PR_DAYS_BEFORE_CLOSE }} days since being marked as stale."
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          # Start with the oldest items first
+          ascending: true
+          repo-token: ${{ secrets.GITHUB_TOKEN }}