osx: clean up includes, we do not need cocoa what we *do* need is the very basics that animia already depends on anyway. these are basically guaranteed to be on any macos system, making it fairly portable now... I haven't tested this :) I don't have a macos machine right now...

# Icons
These icons are from Yusuke Kamiyamane's [[Fugue Icons]](https://p.yusukekamiyamane.com/) pack. The original files have been left intact alongside bin2h variants (for easy inclusion in source code).