chore: setup stale bot workflow

.github/workflows/stale.yml

@@ -0,0 +1,35 @@
+name: Close stale issues and PRs
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  workflow_dispatch:
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+
+    permissions:
+      issues: write
+      pull-requests: write
+
+    steps:
+      - name: Mark stale issues and PRs
+        uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639
+        with:
+          stale-issue-message: >
+            This issue has been marked as stale due to inactivity.
+            Please add updates or comments to keep it active.
+
+          stale-pr-message: >
+            This pull request has been marked as stale due to inactivity.
+            Please add updates or commits to keep it active.
+
+          close-issue-message: >
+            Closing this issue due to prolonged inactivity.
+
+          close-pr-message: >
+            Closing this pull request due to prolonged inactivity.
+
+          days-before-stale: 14
+          days-before-close: 7