ci: test supported Python versions

Author: maxiwhite

.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+name: KERNEL CI
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - run: python -m pip install --upgrade pip pytest
+      - run: python -m pytest tests