add a weekly test

.github/workflows/weekly-test.yaml

@@ -0,0 +1,22 @@
+name: weekly_test
+
+on:
+  schedule:
+      - cron: "30  1  *  *  1"
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.9', '3.10', '3.11', '3.12']
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Setup yt_aspect
+      run: |
+        python -m pip install -e .[test]
+    - name: Test with pytest
+      run: pytest .