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-libs/src/surrealdb/mod.rs

@@ -1,10 +1,10 @@
 use super::Env;
 use crate::SurrealMemClient;
-use surrealdb::engine::local::Mem;
+use crate::enviroment::load_env;
 use surrealdb::engine::any;
+use surrealdb::engine::local::Mem;
 use surrealdb::opt::auth::Root;
 use surrealdb::{Result, Surreal};
-use crate::enviroment::load_env;
 
 pub mod resource;
 pub use resource::*;
@@ -13,7 +13,6 @@ pub async fn surrealdb_init_ws() -> Result<Surreal<any::Any>> {
 	load_env();
 	let env = Env::new();
 	let db = any::connect(&env.surrealdb_url).await?;
-	
 
 	db.signin(Root {
 		username: &env.surrealdb_username,