refactor: drop pydantic and support blocking

Author: fantix

gel/auth/__init__.py

@@ -15,3 +15,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
+from . import email_password
+from .token_data import TokenData
+from .pkce import PKCE, generate_pkce, AsyncPKCE, generate_async_pkce
+
+__all__ = [
+    "email_password",
+    "TokenData",
+    "PKCE",
+    "generate_pkce",
+    "AsyncPKCE",
+    "generate_async_pkce",
+]