Add comprehensive tests for mentor repository and authentication

- Implemented tests for creating, retrieving, updating, and deleting mentors in `mentor_repository_test.rs`.
- Added tests for user authentication, including successful login, invalid email formats, and inactive users in `auth_login_tests.rs`.
- Created a mock test environment setup in `mock_test.rs` to facilitate database operations during tests.
- Updated module structure to include new test files for mentors and authentication.
- Ensured cleanup of the database after tests to maintain isolation and prevent side effects.

imphnen-gacha/src/v1/gacha_rolls/gacha_rolls_service.rs

@@ -63,4 +63,12 @@ impl GachaRollService {
 			Err(e) => common_response(StatusCode::INTERNAL_SERVER_ERROR, &e.to_string()),
 		}
 	}
+
+	pub async fn soft_delete_gacha_roll(state: &AppState, id: String) -> Response {
+		let repo = GachaRollRepository::new(state);
+		match repo.query_soft_delete_gacha_roll(id).await {
+			Ok(msg) => common_response(StatusCode::OK, &msg),
+			Err(e) => common_response(StatusCode::NOT_FOUND, &e.to_string()),
+		}
+	}
 }