feat(workflow): add stale workflow

.github/workflows/close-stale-issues.yml

@@ -0,0 +1,20 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '0 0 8 ? * WED,SAT *'
+  workflow_dispatch:
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          close-issue-message: 'Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open.'
+          close-pr-message: 'Closing due to lack of requested feedback. If you would like us to look at this, please provide the requested information and we will re-open.'
+          close-issue-label: 'closed-as-inactive'
+          days-before-close: 7
+          only-labels: 'group:requested-info'
+          exempt-issue-labels: 'feedback-provided'
+          exempt-pr-labels: 'feedback-provided'
+          operations-per-run: 300