Added github actions for linting and unit tests

.github/workflows/python-lint.yml

@@ -0,0 +1,17 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+      - uses: psf/black@stable
+        with:
+          options: "--check --verbose"
+          src: "./openevolve ./tests ./examples"
+          use_pyproject: true

.github/workflows/python-test.yml

@@ -0,0 +1,25 @@
+name: Python Unit Tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.9'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -e ".[dev]"
+
+    - name: Run unit tests
+      run: |
+        python -m unittest discover -s tests -p "*.py"