Audio Clean Up

[milkman1015]

Want to refactor the audio driver code, we have a lot of inconsistencies with how it is implemented compared to other drivers.
Some things I would like to do:

• General code cleanup, get rid of unused structs and stuff, make some functions that we should be using but aren't
• Make it so the wav files live in the filesystem instead of including it inside the kernel
• Change from double buffering to filling in read BDL entries
• Maybe fix support for stereo audio? I am not sure why it does not work so I will have to look more into it
• Add support for users to play audio, I have ideas on what needs to be done but I am not too sure