Create stale.yml

Configure an action of mark off stale PRs (no activity for 60 days) and issues (120 days).

Signed-off-by: Michal Polovka <[email protected]>

.github/workflows/stale.yml

@@ -0,0 +1,27 @@
+# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
+#
+# You can adjust the behavior by modifying this file.
+# For more information, see:
+# https://github.com/actions/stale
+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+    - cron: "25 12 * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+
+    steps:
+      - uses: actions/stale@v5
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          stale-issue-message: "This issue has not received any attention in 120 days."
+          stale-pr-message: "This PR has not received any attention in 60 days."
+          days-before-issue-stale: 120
+          stale-issue-label: "stale"
+          stale-pr-label: "stale"