chore: add stale action

Author: brc-dd

.github/workflows/stale.yml

@@ -0,0 +1,17 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+  workflow_dispatch:
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v8
+        with:
+          days-before-stale: 30
+          operations-per-run: 1000
+          stale-issue-label: 'stale'
+          stale-issue-message: ''
+          stale-pr-message: ''