[Android] Add top level navigation

[masoomyf]

• Add compose navigation library
• Add MainApp composable function scaffolding
• Setup navigation controller, navigation graph bottombar, and destinations.
  • Add NavGraph(modifier, navController, startDestination) composable in which nav host with all composable screen were present.
  • Define AppDestinations routes and AppNavigationActions class in which there should be function to navigate top level destination.
  • In MainApp composable, define top level destination's route list.
  • Create sealed class for destination, and sub-object for each destination.