docs: Create issue_stale.yaml

Author: Kin-Zhang

.github/workflows/issue_stale.yaml

@@ -0,0 +1,29 @@
+name: Close inactive issues
+on:
+  schedule:
+    - cron: "35 11 * * *"
+
+env:
+  DAYS_BEFORE_ISSUE_STALE: 30
+  DAYS_BEFORE_ISSUE_CLOSE: 14
+
+jobs:
+  close-issues:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/stale@v5
+        with:
+          days-before-issue-stale: ${{ env.DAYS_BEFORE_ISSUE_STALE }}
+          days-before-issue-close: ${{ env.DAYS_BEFORE_ISSUE_CLOSE }}
+          stale-issue-label: "stale"
+          stale-issue-message: |
+            This issue is stale because it has been open for ${{ env.DAYS_BEFORE_ISSUE_STALE }} days with no activity. 
+            It will be closed if no further activity occurs.
+          close-issue-message: |
+            This issue is being closed because it has been stale for ${{ env.DAYS_BEFORE_ISSUE_CLOSE }} days with no activity.
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          repo-token: ${{ secrets.GITHUB_TOKEN }}