PlanetComponentLoader supports direct register of component types and load with component selector

[walkerkay]

Describe alternatives you've considered

// in app1
export class AppModule {
    constructor(private planetComponentLoader: PlanetComponentLoader) {
        this.planetComponentLoader.register([App1ProjectListComponent]);
    }
}

// in app2
<ng-container *planetComponentOutlet="'app1-project-list'; app: 'app1'; initialState: { search: 'xxx' }"></ng-container>