some type fixes

lenticular_cloud/auth_providers.py

@@ -5,21 +5,23 @@ from hmac import compare_digest as compare_hash
 import crypt
 from .model import User
 import logging
+from abc import ABC, abstractclassmethod, abstractmethod
 
 
 logger = logging.getLogger(__name__)
 
 
 
-class AuthProvider:
+class AuthProvider(ABC):
 
     @classmethod
-    def get_name(csl):
-        return csl.__name__
+    def get_name(cls):
+        return cls.__name__
 
     @staticmethod
+    @abstractmethod
     def get_form() -> FlaskForm:
-        return
+        ...
 
     @staticmethod
     def check_auth(user: User, form) -> bool: