Add CI workflow for linting and testing with multiple Python versions

Author: msabramo

.github/workflows/ci.yml

@@ -0,0 +1,39 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  lint-and-test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Install uv
+        run: |
+          pip install uv
+
+      - name: Install dependencies
+        run: |
+          uv sync --dev
+
+      - name: Lint with ruff
+        run: |
+          uv run ruff check firefly tests
+
+      - name: Run tests with pytest
+        run: |
+          uv run pytest --cov=firefly --cov-report=term-missing