ci: add test pipeline, PyPI release workflow, and lint fixes

- Update Woodpecker to run unit and integration tests in parallel
- Add GitHub Actions workflow for PyPI trusted publishing on main
- Add license, classifiers, keywords, and URLs to pyproject.toml
- Fix ruff lint errors (unused imports, duplicate class name) and formatting

tests/conftest.py

@@ -24,7 +24,9 @@ def _read_env_file() -> dict[str, str]:
     return result
 
 
-def pytest_collection_modifyitems(config: pytest.Config, items: list[pytest.Item]) -> None:
+def pytest_collection_modifyitems(
+    config: pytest.Config, items: list[pytest.Item]
+) -> None:
     env_vars = _read_env_file()
     has_key = bool(os.environ.get("WRENN_API_KEY") or env_vars.get("WRENN_API_KEY"))
     if has_key: