refactor(app): reorganize application structure and update includes

- Moved core components such as `Controller` and `Window` from `src/app/core/` to `src/app/` and `src/app/platform/`, respectively, to improve modularity and clarity.
- Updated include paths across the codebase to reflect the new locations of these components.
- Introduced a new foundational core library in `src/core/` for project management and ROM patching logic, enhancing the separation of concerns.
- Adjusted CMake configurations to ensure proper compilation of the new core library and updated dependencies in various modules.

Benefits:
- Streamlines the application structure, making it easier to navigate and maintain.
- Enhances code organization by clearly delineating core functionalities from application-specific logic.
- Improves overall architecture by promoting a clearer separation of concerns between different components.

src/app/editor/editor_manager.h

@@ -16,7 +16,7 @@
 #include <string>
 
 #include "absl/status/status.h"
-#include "app/core/project.h"
+#include "core/project.h"
 #include "app/editor/agent/agent_chat_history_popup.h"
 #include "app/editor/code/project_file_editor.h"
 #include "app/editor/system/editor_card_registry.h"
@@ -302,7 +302,7 @@ class EditorManager {
 
   gfx::IRenderer* renderer_ = nullptr;
 
-  core::YazeProject current_project_;
+  project::YazeProject current_project_;
   EditorDependencies::SharedClipboard shared_clipboard_;
   std::unique_ptr<PopupManager> popup_manager_;
   ToastManager toast_manager_;