Apps: Upstream lifecycle dependencies

- ViewModelProviders.of() which was part of lifecycle-extensions has been deprecated
- Switch to latest version of lifecycle-viewmodel-ktx as dependency and migrate required
  code to use ViewModelProvider()

References:
- [1]: https://developer.android.com/jetpack/androidx/releases/lifecycle#declaring_dependencies
- [2]: https://twitter.com/ianhlake/status/1159159590476382208



Signed-off-by: Aayush Gupta <theimpulson@e.email>