Proposal: Add discussion panel to repo for best practices discourse

[superbuggy]

This is a feature request for the repository, and not for the Tone library itself.

I have come across some hurdles with Tone.js as a casual user where I've not been sure what the best practices are with Tone.js. I think there are some surmountable challenges to having productive discourse, listed as follows:

1. Decidability of 'best' practices: stem from the flexibility of the Web Audio API and ToneJS, there are a lot of ways to do things. This perhaps could be framed in terms of patterns in a manner analogous to general programming design and practice.
2. Synchronization of event systems: There can be framework-specific challenges with synchronizing the event system of the framework and with Tone.js, often ones that require a deep understanding of the framework itself, and often the toolchain and development environment that accompany it.
3. Abstraction: Web Audio is an evolving API with some difficult design questions (ones well above my expertise) at its heart, often relating to the nature of an audio graph, its state, and the behavior of its components and event flows.

While I'm sure there are others, I think ordered discussion that accounts for these and other major themes could yield production discussion that benefits users and also helps them to be stronger developers in general. Developing with Tone and front-end frameworks has definitely posed challenges that often have lead me to a deeper understanding of the framework and have made me a better developer. This discussion could ideally enhance documentation as well.