Prismatic export plugin

[Zaraka]

Currently very basic in its features, it only merges a few recognized channels and derives several parameter types.
The version of Prismatic that supports these fixture files will be made available this week.

[FloEdelmann]

Wow, really cool! 🙂
However, it's quite a bit to review and I don't know how fast I'll get to it. In the meantime, could you have a look at the "cognitive complexity" ESLint warnings (sonarjs/cognitive-complexity)? Splitting those functions would make them much more readable and thus easier to review and maintain.

[Zaraka]

@FloEdelmann I have fixed the ESLint warnings a squashed some bugs.

Prismatic version which supports this .prd output file is now released and available for download at prismatic.art, hit me up so I can send you a license to try it out if you are interested

Many features are still not supported, for example, the matrixes, and capabilities are almost ignored.
I will get around and keep this plugin updated as I decided ofl will be the primary way to supply Fixture specs into Prismatic, so this is definitely not my final PR on this matter.