Move from MVP to MVVM

[grine4ka]

Using MVP leads to memory leaks during configuration changes. One way of getting rig of it is using retain fragments.

Another way is to move to MVVM with Architecture Components

Links:

• Architecting Android...Reloaded

[grine4ka]

Watch this docs as an example: https://github.com/android/nowinandroid/blob/main/docs/ArchitectureLearningJourney.md