Add CI workflow for linting and testing

.github/workflows/ci.yml

@@ -0,0 +1,68 @@
+name: Test & Lint
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pdm-project/setup-pdm@v4
+        with:
+          python-version: "3.10"
+          cache: true
+
+      - name: Install dependencies
+        run: |
+          pdm install -G :all
+          echo `dirname $(pdm info --python)` >> $GITHUB_PATH
+
+      - name: Lint with Ruff
+        continue-on-error: true
+        run: pdm lint --output-format github
+
+      - name: Lint with Pyright
+        uses: jakebailey/pyright-action@v2
+        continue-on-error: true
+        with:
+          pylance-version: latest-release
+
+  test:
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+      fail-fast: false
+
+    runs-on: ${{ matrix.os }}
+
+    env:
+      OS: ${{ matrix.os }}
+      PYTHON_VERSION: ${{ matrix.python-version }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pdm-project/setup-pdm@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: true
+
+      - name: Install dependencies
+        shell: bash
+        run: |
+          pdm install -G :all
+          echo `dirname $(pdm info --python)` >> $GITHUB_PATH
+
+      - name: Run tests
+        run: pdm test
+
+      - uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          env_vars: PYTHON_VERSION,OS
+          fail_ci_if_error: true