rGuiIcons v2.1 published!

Official release for rGuiIcons v2.1. Some features on this release:

• ADDED: Sponsor window for tool support
• ADDED: Multiple new raygui icons, intended for code editing tools
• REDESIGNED: Edited iconset is independant of raygui
• Updated to raylib 4.5-dev and raygui 3.5-dev

Enjoy rGuiIcons!