Implement actions/stale@v3 to close issues

.github/workflows/stale.yml

@@ -0,0 +1,20 @@
+name: 'Close stale issues'
+on:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          stale-issue-label: 'area: stale'
+          stale-issue-message: |
+            This issue is stale because it has been open 30 days with no activity.
+            Our core developers tend to be more verbose on denying. If there is no negative comment, possibly this feature will be accepted.
+            We are accepting PRs :smiley:.
+            Comment or this will be closed in 7 days
+          days-before-stale: 30
+          days-before-close: 7