refactor(Rest): Clean up unused imports and restructure test modules

Remove unused `std::fs` and `tempfile::TempDir` imports from the test module in Detect.rs. Convert tests/lib.rs to use inline nested module syntax (`pub mod unit { ... }`) instead of separate file declarations, aligning with the project's modular organization.

Author: NikolaRHristov

Source/Fn/Worker/Detect.rs

@@ -161,10 +161,6 @@ impl WorkerDetector {
 
 #[cfg(test)]
 mod tests {
-	use std::fs;
-
-	use tempfile::TempDir;
-
 	use super::*;
 
 	#[test]

tests/lib.rs

@@ -3,10 +3,11 @@
 //! This module re-exports all necessary components for integration tests.
 
 pub mod vscode_compatibility;
-pub mod unit;
-pub mod unit::parser_tests;
-pub mod unit::transformer_tests;
-pub mod unit::codegen_tests;
+pub mod unit {
+    pub mod parser_tests;
+    pub mod transformer_tests;
+    pub mod codegen_tests;
+}
 
 // Re-export compiler components for tests
 pub use crate::{