ci: add GitHub Actions pytest workflow

Author: Saharsh1123

.github/workflows/tests.yaml

@@ -0,0 +1,28 @@
+name: Run Python Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install test dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install pytest
+
+      - name: Run tests
+        run: pytest