Add schematics to generate boilerplate for angular router and ngrx/router-store

[ylulloa]

https://www.youtube.com/watch?v=YsG44g6_Fo0

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[X] Feature request
[ ] Documentation issue or request

What is the current behavior?

Expected behavior:

Minimal reproduction of the problem with instructions:

Version of affected browser(s),operating system(s), npm, node and ngrx:

Other information:

[vincecampanale]

@brandonroberts Have you already started on this feature? I'd be interested in working on it.

[brandonroberts]

Some of this work is being handled under #920 with the ng-add schematics support. Maybe you and @vitaliy-bobrov can coordinate on this?