Setup the AI to Receive Audio Input

[MickeyPa]

A subtask of #6.

As a user, I want to communicate to the AI so that I can receive an audio response.

1. Research Watson SDK for Unity and Watson Services [Research Watson SDK for Unity and Watson Services #19]
2. Research Machine Learning for Unity [Research Machine Learning for Unity #41]
3. Research responses for AI [Research responses for AI #43]
4. Add Watson SDK to Unity [Add Watson SDK to Unity #20]
5. Add Machine Learning Agent to Unity [Add Machine Learning Agent to Unity #21]
6. Add Unity Assets and Scenes [Add Unity Assets and Scenes #22]
7. Set up mongoDB to Store all Sent and Received Text [Set up mongoDB to Store all Sent and Received Text #23]
8. Implement Speech-to-Text [Implement Speech-to-Text #24]
9. Implement Text-to-Speech with Tone Analyzer for AI Response [Implement Text-to-Speech with Tone Analyzer for AI Response  #25]
10. Implement Tone Analyzer for User Input [Implement Tone Analyzer for User Input #26]
11. Create Tests [Create Callisto AI Tests #30]
12. Callisto Documentation 2 [Callisto Documentation #2 #42]

[Story Points: 10+]
[Risk: Low]
[Priority: High]