refactor: Update ROM service implementation and CMake configurations

- Adjusted paths in CMake files to reference the correct location of `rom_service.proto`.
- Refactored `RomServiceImpl` to use a namespace alias for improved readability and maintainability.
- Updated method parameters in `RomServiceImpl` to utilize the new namespace alias for consistency.
- Added a new `rom_service.proto` file to define the ROM manipulation service, enabling remote operations for reading and writing ROM data.
- Enhanced the `RecentFilesManager` to utilize a utility function for retrieving the configuration directory, improving code clarity.
- Included necessary updates in CMake configurations to integrate the new proto file and ensure proper build setup.

src/app/net/net_library.cmake

@@ -67,7 +67,7 @@ endif()
 
 # Add gRPC support for ROM service
 if(YAZE_WITH_GRPC)
-  target_add_protobuf(yaze_net ${PROJECT_SOURCE_DIR}/protos/rom_service.proto)
+  target_add_protobuf(yaze_net ${PROJECT_SOURCE_DIR}/src/protos/rom_service.proto)
   
   target_link_libraries(yaze_net PUBLIC
     grpc++