Add support for blueprints when Setting Up View Entity

[grofit]

Summary

Currently when you are using a scene first setup mb on a game object (SetupView MonoBehaviour), it only lets you setup the components that the view should be using, which is great but it would be good to also allow you to choose a blueprint to use and configure that, allowing you to have an easier more standard way of setting up scene first entities.

[grofit]

Some work has been done to allow supporting this on the next major version (not major semantic version but major feature version in a branch), but that is kinda in limbo until:

1. unity brings .net 4.6 support out of experimental into mainstream
2. unitys package manager is public, as there are a lot of new dependencies which would probably be a pain for people to add themselves

Even with this branch in place, some more work still needs to be done to support this, but it would be in a much better place to do so.