New preview graphic for Hire Hunter

The preview area for Hire Hunter has gotten an upgrade - just in time for the Steam Next Fest. 

The old version

Checkout the older version. Much more janky looks wise. Shoutout to David - my main man for graphics. He really improved this so much by going for a more simple design.

Refactored Scene Management

How I manage scenes has been refactored. All audio related code has been moved into it's own scene. This will help keep it separate but also help to figure out a bug with overlapping music in the Battle scene. Work on this is to be continued - hopefully I can resolve before the Fest starts. x_x

Note: Audio bug with song playback has now been fixed in v1.1.1. ^_^