Changed module name from my_auth to myauth

Changed encryption algorithm to argon2
Added unit tests

tests/core/conftest.py

@@ -7,11 +7,11 @@ from unittest.mock import MagicMock
 
 import pytest
 
-from my_auth.core.password import PasswordManager
-from my_auth.core.token import TokenManager
-from src.my_auth.core.auth import AuthService
-from src.my_auth.models.user import UserCreate, UserInDB
-from src.my_auth.persistence.sqlite import SQLiteUserRepository, SQLiteTokenRepository
+from myauth.core.password import PasswordManager
+from myauth.core.token import TokenManager
+from myauth.core.auth import AuthService
+from myauth.models.user import UserCreate, UserInDB
+from myauth.persistence.sqlite import SQLiteUserRepository, SQLiteTokenRepository
 
 
 @pytest.fixture