Refactor project structure and remove unnecessary files

- Deleted generated CMake files and build artifacts from the cmake-build-debug directory.
- Removed the Intellisense header - what was that???
- Cleaned up the melonDS.ini configuration (removed hard path)

include/Intellisense.h

@@ -1,16 +0,0 @@
-#pragma once
-
-#ifndef __INTELLISENSE_H__
-#define __INTELLISENSE_H__
-
-#if __INTELLISENSE__
-#define __attribute__(q)
-#define __builtin_strcmp(a, b) 0
-#define __builtin_strlen(a) 0
-#define __builtin_memcpy(a, b) 0
-#define __builtin_va_list void *
-#define __builtin_va_start(a, b)
-#define __extension__
-#endif
-
-#endif //__INTELLISENSE_H__