Changed module name from my_auth to myauth

Changed encryption algorithm to argon2
Added unit tests

pyproject.toml

@@ -7,7 +7,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "myauth"
-version = "0.3.0"
+version = "0.5.0"
 description = "A reusable, modular authentication system for FastAPI applications with pluggable database backends."
 readme = "README.md"
 authors = [
@@ -38,8 +38,9 @@ dependencies = [
     "fastapi",
     "pydantic",
     "pydantic-settings",
+    "pydantic[email]",
     "python-jose[cryptography]",
-    "passlib[bcrypt]",
+    "passlib[argon2]",
     "python-multipart"
 ]