clean old stale branchs (#274)

* feat: add github action to delete stale branches

* fix: cron schedule and workflow_dispatch

* fix: remove max issues param

Author: SockworkOrange

.github/workflows/stale-branches.yml

@@ -0,0 +1,21 @@
+name: Remove Stale Branches
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 1 * *'
+
+permissions:
+  issues: write
+  contents: write
+
+jobs:
+  remove_stale_branches:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Remove Stale Branches
+        uses: crs-k/stale-branches@v8.2.2
+        with:
+          days-before-stale: 30
+          days-before-delete: 90
+          pr-check: true