Making calls async

Right now fetching rockets are sequential:

Fetch -> Save -> Return

This should be async with help of Room's LiveData support. Also, flow should be replaced with liveData builder in BaseInteractor.

Moving activity contributors to corresponding modules

AppModule contributes activities of features. This contribution should be moved to corresponding module.

Replace navigation

Current state has multiple activities. Goal is to introduce single activity approach with deeplink navigation.

Add Paging

Right now repository only fetches 10 responses statically defined. Introduce paging with paging library.