where to package the MMt generators

[kohlhase]

It seems that the design of TGView is converging towards the following division of labor:

• MMT generates "styled" JSON (giving the graph and how it should look at an abstract level) via various generator extensions.
• TGView just shows this and makes it visible (in various layouts), the TGView has a UI component that allows to select the generator.

That means that much of the functionality of TGView comes from the generators. I set up a wiki page for documenting them at https://github.com/UniFormal/TGView/wiki/Graph-Sources (@Jazzpirate should extend that).

I would like to know (and have documented) where the code of the generators is, and where it should be. I suspect it is with the MMT sources, but should it not be bundled with TGView? It makes little sense without TGView.

I would like to have this discussed.