fix: move some logic to domain entities

domain/usecase/user/interface.go

@@ -29,7 +29,7 @@ type UseCase interface {
 	GetUser(id entity.ID) (*entity.User, error)
 	SearchUsers(query string) ([]*entity.User, error)
 	ListUsers() ([]*entity.User, error)
-	CreateUser(e *entity.User) (entity.ID, error)
+	CreateUser(email, password, firstName, lastName string) (entity.ID, error)
 	UpdateUser(e *entity.User) error
 	DeleteUser(id entity.ID) error
 }