Add linter to CI (#9)

Author: jeffcarp

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+name: CI
+on: [push, pull_request]
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Lint
+        uses: astral-sh/ruff-action@v2
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+      - name: Test with pytest
+        run: |
+          pip install pytest
+          pytest ./src/
+

.github/workflows/test.yml

@@ -14,7 +14,6 @@
 
 """Configuration file for the Sphinx documentation builder."""
 
-import sphinx_rtd_theme
 import os
 import sys