feat(ci): add issue-close.yml

.github/workflows/issue-close.yml

@@ -0,0 +1,18 @@
+name: Close Issue
+
+on:
+  schedule:
+    - cron: "0 2 * * 1"
+  workflow_dispatch: # Allow for running this manually.
+
+jobs:
+  issue-to-be-closed:
+    runs-on: ubuntu-latest
+    steps:
+      - name: close-issues
+        uses: actions-cool/issues-helper@v3
+        with:
+          actions: 'close-issues'
+          token: ${{ secrets.GITHUB_TOKEN }}
+          labels: 'to be closed'
+          inactive-day: 7