feat: add workflow for linting, type-checking and testing

Author: monok8i

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.12"
+      - name: Upgrade pip
+        run: pip install --upgrade pip
+      - name: Install dependencies
+        run: pip install ruff mypy pytest
+      - name: Lint (ruff)
+        run: ruff check --config=pyproject.toml src/
+      - name: Type check (mypy)
+        run: mypy --config-file=pyproject.toml src/
+      - name: Run tests (pytest)
+        run: pytest -v