audioExt v0.0.3

-New loading/unloading feature for audio! Now audio files can be added as entries and load only when demanded!
-Added new functions, and overhauled a couple of the audioExtSound functions to allow the use of audioStructs.
-audioExtSoundGetID now errors out upon finding an invalid entry, instead of previously returning -1.
-Added a way to scan & load valid audio files upon start.
-Additionally to above, there's a few new macros that allow loading in all of the audio files as well. You can check under __audioExtConfig for more info.