Create issue lock workflow

Help clean up old issues.

Author: mglaman

lock.yml

@@ -0,0 +1,28 @@
+name: 'Lock Threads'
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+
+concurrency:
+  group: lock
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v3
+        with:
+          issue-inactive-days: '31'
+          issue-comment: >
+            This thread has been automatically locked since there has not been
+            any recent activity after it was closed. Please open a new issue for
+            related bugs.
+          issue-lock-reason: 'resolved'
+          process-only: 'issues'
+          log-output: true