Configure actions/stale

.github/workflows/stale.yml

@@ -0,0 +1,32 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v5
+        with:
+          days-before-stale: 90
+          days-before-close: 60
+          exempt-issue-labels: 'pinned,security'
+          exempt-pr-labels: 'pinned,security'
+          stale-issue-message: 'This issue has been automatically marked as stale because it has not had
+recent activity. It will be closed if no further activity occurs.
+
+If this is still an issue for you, please try to help by debugging it
+further and sharing your results.
+
+Thank you for your contributions.'
+          stale-pr-message: 'This PR has been automatically marked as stale because it has not had
+recent activity. It will be closed if no further activity occurs.
+
+If this is still an issue for you, please try to complete the PR by adding tests and making sure that the CI is green.
+
+Thank you for your contributions.'