Add issue and pr auto-locking

.github/workflows/lock.yml

@@ -0,0 +1,20 @@
+---
+name: Lock
+
+on:
+  schedule:
+    - cron: "0 5 * * *"
+  workflow_dispatch:
+
+jobs:
+  lock:
+    name: 🔒 Lock closed issues and PRs
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/[email protected]
+        with:
+          github-token: ${{ github.token }}
+          issue-inactive-days: "30"
+          issue-lock-reason: ""
+          pr-inactive-days: "1"
+          pr-lock-reason: ""