add bitsy audio

"Add Bitsy Audio" is a tool for enhancing the Bitsy game engine with audio capabilities. It allows users to easily add and manage audio files, particularly MP3s, for use in their games. The interface is built on top of David Mowatt's bitsymuse hack, allowing for per-room audio implementation. This tool simplifies the process of adding audio to Bitsy games and makes it accessible to a wider range of creators.