feat(): migrate to auth identity

src/template_project/application/auth_identity/entity.py

@@ -0,0 +1,40 @@
+from datetime import UTC, datetime
+from enum import StrEnum
+from typing import NewType, Self
+from uuid import UUID
+
+from uuid_utils.compat import uuid7
+
+from template_project.application.common.entity import Entity, to_entity
+from template_project.application.user.entity import UserId
+
+AuthIdentityId = NewType("AuthIdentityId", UUID)
+
+
+class AuthMethod(StrEnum):
+    EMAIL = "email"
+
+
+@to_entity
+class AuthIdentity(Entity[AuthIdentityId]):
+    user_id: UserId
+    method: AuthMethod
+    identifier: str
+    secret_key: str | None
+
+    @classmethod
+    def factory(
+        cls,
+        user_id: UserId,
+        method: AuthMethod,
+        identifier: str,
+        secret_key: str | None = None,
+    ) -> Self:
+        return cls(
+            id=AuthIdentityId(uuid7()),
+            user_id=user_id,
+            method=method,
+            identifier=identifier,
+            secret_key=secret_key,
+            created_at=datetime.now(tz=UTC),
+        )