Add CI checks

.github/workflows/ci.yml

@@ -0,0 +1,59 @@
+name: CI Checks
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - '**'
+
+
+jobs:
+  test:
+    strategy:
+      max-parallel: 5
+      matrix:
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        # Just to slim down the test matrix:
+        exclude:
+          - python-version: 3.8
+            os: macos-latest
+          - python-version: 3.8
+            os: windows-latest
+          - python-version: 3.9
+            os: ubuntu-latest
+          - python-version: 3.10
+            os: macos-latest
+          - python-version: 3.10
+            os: windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade hatch
+      - name: Run tests
+        run: |
+          hatch run +py=${{ matrix.py || matrix.python-version }} test:test
+        shell: bash
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+      - name: Install Python dependencies
+        run: |
+          python -m pip install --upgrade hatch
+      - name: Check style
+        if: always()
+        run: hatch run style:check