[WIP] fixes #711

[VishnuSanal]

fixes #711

[what-the-diff]

PR Summary

• Update on AppListAdapter.kt
  The code of our main app-listing component is refined to make it more interactive. It is now endowed with a new interactive menu feature which will show options linked to installing/uninstalling the app and adding/removing it from the favourite's list.

• Improvement of AppListFragment.kt
  This part of the code that shows pieces of our app list screen has been revamped to use data about users' favourite apps. It incorporates the functionality to retrieve this data and pass it on to our app-listing component. It also handles the actions that users can do via the new interactive menu.

• Refinement of AppListViewModel.kt
  Minor adjustments have been made to the sequence of property definitions to align with the overall flow.

• Addition to strings.xml
  Two new text resources, for 'adding to favourites' and 'removing from favourites', have been introduced for better user interface interaction. These would be shown as option labels in the new interactive menu.

[Iamlooker]

Sorry for delay, was busy with college stuff too 😅