improve current APIs

[DynamicGoose]

Todo

• take number of windows to be spawned in spawn method magma_winit
• testing event workflow magma_winit
• Window component
• real ui implementation
• better audio workflow (maybe move away from kira to a more low levl library)

[DynamicGoose]

magma_winit 3055819

[DynamicGoose]

#15