epic: refactor SDL2_Renderer usage to IRenderer and queued texture rendering

- Updated the testing guide to clarify the testing framework's organization and execution methods, improving user understanding.
- Refactored CMakeLists to include new platform-specific files, ensuring proper integration of the rendering backend.
- Modified main application files to utilize the new IRenderer interface, enhancing flexibility in rendering operations.
- Implemented deferred texture management in various components, allowing for more efficient graphics handling and improved performance.
- Introduced new methods for texture creation and updates, streamlining the rendering process across the application.
- Enhanced logging and error handling in the rendering pipeline to facilitate better debugging and diagnostics.

src/app/net/collaboration_service.h

@@ -11,7 +11,7 @@
 #include "app/rom.h"
 
 namespace yaze {
-namespace app {
+
 namespace net {
 
 /**
@@ -160,7 +160,7 @@ class CollaborationService {
 };
 
 }  // namespace net
-}  // namespace app
+
 }  // namespace yaze
 
 #endif  // YAZE_APP_NET_COLLABORATION_SERVICE_H_