Add stale actions

.github/workflows/stale.yml

@@ -0,0 +1,31 @@
+# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
+#
+# You can adjust the behavior by modifying this file.
+# For more information, see:
+# https://github.com/actions/stale
+name: Close Stale Issues
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+
+    steps:
+      - uses: actions/[email protected]
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          stale-issue-message: ''
+          stale-pr-message: ''
+          stale-issue-label: 'Stale'
+          stale-pr-label: 'Stale'
+          any-of-labels: 'Waiting for Author'
+          days-before-stale: 30
+          days-before-close: 0
+