lock closed issues after 14 days of inactivity

Signed-off-by: szaimen <szaimen@e.mail.de>

.github/workflows/lock-threads.yml

@@ -0,0 +1,20 @@
+name: 'Lock Threads'
+
+on:
+  schedule:
+    - cron: '0 * * * *'
+
+permissions:
+  issues: write
+
+concurrency:
+  group: lock
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v3
+        with: 
+          issue-inactive-days: '14'
+          process-only: 'issues'