GraphQL server+client example

[kylecordes]

This is a feature idea.

Add:

• example realistic (-ish) server which exposes a GraphQL endpoint.
• example realistic UI module which consumes that.
• use Apollo libraries in both.

Justification:

For a number of years, REST APIs have been the standard most enterprise data system projects aim for. While this has been an improvement over many past practices, it is also been found to not scale very well in terms of system size. In particular, it often leads to manual work composing together different API aspects so that they can be consumed efficiently from a user interface.

GraphQL solves this problem, by raising the level of abstraction.

[kylecordes]

Server work is underway on this, it's not in use in the user interface yet.