Add comprehensive tests for hackathon service functionality

- Implemented tests for creating, retrieving, updating, and deleting hackathons.
- Added validation tests for hackathon creation and updates.
- Included tests for hackathon events and timelines, ensuring proper handling of edge cases.
- Created tests for hackathon submissions, including validation and submission status updates.
- Organized tests into a dedicated module for better structure and maintainability.

imphnen-hackathon/src/v1/mod.rs

@@ -0,0 +1,11 @@
+use axum::Router;
+
+pub mod hackathon;
+
+// Export the router function from hackathon module
+pub use hackathon::hackathon_router;
+
+// Main route constructor
+pub fn hackathon_protected_routes() -> Router {
+    Router::new().nest("/hackathons", hackathon_router())
+}