ci(issues): add stale issue workflow (#367)

Author: Xenira

.github/workflows/stale-issues.yml

@@ -0,0 +1,20 @@
+name: 'Close stale issues'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+permissions:
+  issues: write
+
+jobs:
+  stale-issues:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          days-before-issue-stale: -1
+          days-before-issue-close: 7
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          stale-issue-lable: 'waiting for feedback'
+          close-issue-message: 'This issue has been automatically closed due to inactivity. Please feel free to reopen it if you are still experiencing the problem.'