refactor(build): update CMake configurations and toolchain for macOS

- Modified CMake settings to ensure consistent use of the Homebrew LLVM/Clang installation on macOS.
- Added a new toolchain file to specify the correct compiler and header search paths, resolving potential conflicts.
- Updated CMake presets to enable the EMU build and set appropriate compiler flags.

Benefits:
- Enhances build reliability and compatibility on macOS by utilizing the Homebrew LLVM toolchain.
- Streamlines the build process with improved configuration management.

src/app/gfx/util/palette_manager.h

@@ -1,6 +1,7 @@
 #ifndef YAZE_APP_GFX_PALETTE_MANAGER_H
 #define YAZE_APP_GFX_PALETTE_MANAGER_H
 
+#include <cstdint>
 #include <deque>
 #include <functional>
 #include <memory>