Create stale.yml

.github/workflows/stale.yml

@@ -0,0 +1,19 @@
+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+  - cron: "0 0 * * *"
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/stale@v1
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        stale-issue-message: 'This issue has been marked as stale due to inactivity. If this issue is still ongoing, please leave a comment.'
+        stale-pr-message: 'This pull request has been marked as stale due to inactivity. If this PR is still ongoing, please leave a comment.'
+        stale-issue-label: 'status/stale'
+        stale-pr-label: 'status/stale'