Add AutoPlay.

[shef3r]

Issue #442

[shef3r]

As mentioned in the issue, with this PR you can run:
ambie:autoplay to open the app and immedately start playing whatever was playing before,
and ambie:autoplay?minimize to open the app, immedately start playing whatever was playing before, and minimize the app.
I also have an idea to add a ?mini argument there to open Ambie Mini. What do you think?

[shef3r]

I also added an Ambie Mini toggle but for some reason when AMini opens there's no play/pause button? is that intentional?

[dpaulino]

I also added an Ambie Mini toggle but for some reason when AMini opens there's no play/pause button? is that intentional?

I talked about this in one of the review comments. We should remove the ambie mini-related code since ambie mini doesn't support this scenario right now