Add Notify MFA module (#16314)

* Add Notify MFA

* Fix unit test

* Address review comment, change storage implementation

* Add retry limit to mfa module

* Fix loading

* Fix invalaid login log processing

* Typing

* Change default message template

* Change one-time password to 8 digit

* Refactoring to not save secret

* Bug fixing

* Change async_initialize method name to aysnc_initialize_login_mfa_step

* Address some simple fix code review comment

homeassistant/auth/mfa_modules/totp.py

@@ -60,6 +60,7 @@ class TotpAuthModule(MultiFactorAuthModule):
     """Auth module validate time-based one time password."""
 
     DEFAULT_TITLE = 'Time-based One Time Password'
+    MAX_RETRY_TIME = 5
 
     def __init__(self, hass: HomeAssistant, config: Dict[str, Any]) -> None:
         """Initialize the user data store."""
@@ -130,7 +131,7 @@ class TotpAuthModule(MultiFactorAuthModule):
 
         return user_id in self._users   # type: ignore
 
-    async def async_validation(
+    async def async_validate(
             self, user_id: str, user_input: Dict[str, Any]) -> bool:
         """Return True if validation passed."""
         if self._users is None: