feat: add auto archiving action (#238)

* feat: add auto archiving action

---------

Co-authored-by: p.delpy@dkfz-heidelberg.de <p.delpy@dkfz-heidelberg.de>
Co-authored-by: Martin Lablans <6804500+lablans@users.noreply.github.com>

.github/workflows/rename-inactive-branches.yml

@@ -0,0 +1,27 @@
+name: Cleanup - Rename Inactive Branches
+
+on:
+  schedule:
+    - cron: '0 0 * * 0'  # Runs every Sunday at midnight
+
+jobs:
+  archive-stale-branches:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: Install Libraries
+        run: pip install requests
+
+      - name: Run Script to Rename Inactive Branches
+        run: |
+          python .github/scripts/rename_inactive_branches.py
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}