Audio binary handling

[PhidLarkson]

In the api directory, within the main.py file, there are some methods that interact with the GhanaNLP APIs.
The focus is in this issue is to add in the utilities, methods that allow you to;

1. Write audio binary data to an audio file
2. Play the audio direcctly out of the system audio output.
3. Create a route to stream audio data (eg. for a local area network)

You could reply with more ways to handle audio data for the utilities.