Add macOS support and project creation tool

- Add macOS static and dynamic library linking support
- Add cross-platform build scripts for Windows, macOS, and Linux
- Add project creation script with metadata embedding
- Add macOS app bundle creation with icon support
- Update CMakeLists.txt for platform detection
- Fix STB rect pack duplicate symbols
- Remove test images and unused files
- Consolidate documentation into MACOS.md

src/shapes.c

@@ -4,6 +4,9 @@
 #include "lua_core.h"
 #include "textures.h"
 
+// Note: STB rect pack is already included in raylib, so we just declare the types
+#include "external/stb_rect_pack.h"
+
 /*
 ## Shapes - Basic shapes drawing functions
 */