Add stale issue/PR workflow

.github/workflows/stale.yml

@@ -0,0 +1,44 @@
+name: Stale
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  workflow_dispatch:
+
+# Default to no permissions; grant minimally at the job level.
+permissions:
+  actions: none
+  attestations: none
+  checks: none
+  contents: none
+  deployments: none
+  discussions: none
+  id-token: none
+  issues: none
+  models: none
+  packages: none
+  pages: none
+  pull-requests: none
+  repository-projects: none
+  security-events: none
+  statuses: none
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/stale@eb5cf3af3ac0a1aa4c9c45633dd1ae542a27a899 # v10.3.0
+        with:
+          stale-pr-message: "This PR has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs."
+          stale-issue-message: "This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs."
+          days-before-pr-stale: 14
+          days-before-pr-close: 7
+          days-before-issue-stale: 60
+          days-before-issue-close: 14
+          stale-pr-label: stale
+          stale-issue-label: stale
+          exempt-issue-labels: feature-request,enhancement