[Feature] Save interrupted downloads in persistent storage

[KaustubhPatange]

Is your feature request related to a problem?

No

Describe the solution you'd like:

When a movie is downloading and the user stops the application, it should be saved to persistent storage which can be recovered later when "Download Queue" is opened.

Describe alternatives you've considered:

None

[KaustubhPatange]

Implementation is possible. Stopping app from recent do call onDestroy() in DownloadService, data can be saved here. Remember to optimize your task to a max 300 ms (which is the maximum time you should spend in onDestroy() otherwise choreographer will get delayed to remove UI from the buffer queue).

[KaustubhPatange]

Follows unexpected paradigms due to service lifecycle