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/lib.rs

@@ -0,0 +1,28 @@
+pub mod v1;
+
+// Re-export core entity types used across the hackathon system
+pub use imphnen_entities::{
+    CountResult,
+    Error,
+    MessageResponseDto,
+    MetaRequestDto,
+    MetaResponseDto,
+    ResponseListSuccessDto,
+    ResponseSuccessDto,
+};
+
+// Error DTO for hackathon module
+#[derive(Clone, Debug, serde::Serialize, serde::Deserialize, utoipa::ToSchema)]
+pub struct ErrorDto {
+    pub status: u16,
+    pub message: String,
+    pub details: Option<serde_json::Value>,
+}
+
+// Explicitly import only what we need from libs and utils to avoid pollution
+pub use imphnen_libs::{
+    AppState,
+};
+
+// Re-export public v1 API
+pub use v1::hackathon::hackathon_controller::hackathon_routes;