free from mini_audiohlper

[bararchy]

See if you like my idea here.

The point it to avoid linking against the hacky c lib, instead, we just embed it into a crystal struct at compule time using macro magic.

you can validate with:

crystal eval 'require "./src/raylib-cr/audio"; puts "Sizes: #{sizeof(RAudio::MADataConverter)}, #{sizeof(RAudio::MAContext)}, #{sizeof(RAudio::MADevice)}, #{sizeof(RAudio::MAMutex)}"'

wdyt?

[sol-vin]

Gonna go to work and when I come back I'll test this. Looks good though!