feat: expose RouterStateModel in @ngxs/router-plugin

[juracy]

I need these imports:

import { RouterState } from '@ngxs/router-plugin';
import { RouterStateModel } from '@ngxs/router-plugin/src/router.state';

to use this:

this.store.select(RouterState)
  .subscribe((route: RouterStateModel) => console.log(route.state));

And I think it should be better:

import { RouterState, RouterStateModel } from '@ngxs/router-plugin';

[juliusstoerrle]

I don't mind, but shouldn't typescript know/infer the type in the next function by itself? It does it for my normal subscriptions!

[juracy]

@juliusstoerrle Using the syntax of select: this.store.select(RouterState) there isn't a type inference...