feat(auth): Implement Google OAuth 2.0 integration with user creation and JWT generation

- Added Google OAuth controller and service to handle authentication via Google.
- Introduced DTOs for Google user and token responses.
- Updated AuthService and UsersService traits to support new Google OAuth functionality.
- Implemented logic to create a new user if they do not exist in the system after Google authentication.
- Enhanced existing user retrieval and JWT generation upon successful login.
- Added tests for Google OAuth flow, including login redirection and callback handling for both new and existing users.
- Updated environment configuration to include Google OAuth credentials.

imphnen-iam/Cargo.toml

@@ -6,10 +6,13 @@ edition = "2024"
 [dependencies]
 imphnen-libs.workspace = true
 imphnen-utils.workspace = true
+async-trait = "0.1"
 imphnen-entities.workspace = true
 axum.workspace = true
 serde.workspace = true
 serde_json.workspace = true
+oauth2 = "4.4.2"
+reqwest = { version = "0.11", features = ["json"] }
 utoipa.workspace = true
 lazy_static.workspace = true
 regex.workspace = true
@@ -31,4 +34,6 @@ uuid.workspace = true
 
 [dev-dependencies]
 dotenvy.workspace = true
+tokio-test = "0.4.2"
+mockall = "0.12.1"
 http-body-util.workspace = true