Feature: Continue Watching

[Ostrym]

Is your feature request related to a problem? Please describe.
One of the frustrating points of the application is not being able to resume an episode of a series where you left off. For a series with a lot of episodes, you have to note the episode number and the cursor next to it.

Describe the solution you'd like
A solution would be something like, at the onExit event of the player or activity, save the episode as well as the current position of the latter, and indicate it with a sort of progress bar below the episodes in question.
Of course, the playback resumes where it left off.