ci(python): add GitHub Actions workflow

Author: thaaddeus

.github/workflows/ci.yaml

@@ -0,0 +1,39 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  ci:
+    name: CI
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Use Python 3.9
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.9"
+
+      - name: Install Poetry
+        run: python -m pip install poetry==1.8.5
+
+      - name: Install Dependencies
+        run: poetry install
+
+      - name: Check Code Format
+        run: poetry run black --check tardis_dev tests
+
+      - name: Run Tests
+        run: poetry run pytest tests/ -q -m "not live"
+
+      - name: Run Import Smoke Test
+        run: |
+          poetry run python -c "from tardis_dev import DEFAULT_ENDPOINT, DEFAULT_DATASETS_ENDPOINT, DEFAULT_CACHE_DIR, Channel, Response, replay, download_datasets, download_datasets_async, get_exchange_details, get_exchange_details_async, clear_cache, default_file_name; print('OK')"