Fix/autoplay queue

[EvieePy]

Description

Fixes a logic error that would randomize the auto_queue everytime tracks were added instead of just randomizing the tracks that are added.

Fixes an issue where the player might not play the next track in auto_queue if it can't find new tracks (even when there are tracks in auto_queue).

Fixes an issue where the player plays the next track before the auto_queue has completed adding its tracks. Although this isn't really a bug it's probably a bad way of doing things as when systems rely on updates in track_start auto_queue could be outdated/incomplete.

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
  • I have updated the changelog with a quick recap of my changes.
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, ...)
• I have read and agree to the Developer Certificate of Origin for this contribution

[chillymosh]

LGTM