Make change mood change the actual mood and give an option to disable it

At least the second part should be fairly easy to do
Assigning this to myself so I can learn some basic bluetooth things

Currently blocked by a firmware pr

mentioned in merge request !23 (merged)

@genofire should take a look at this as well

Not sure, what i could do here (now) -> if you have something, just assign it me

branch should be ready for review and merge now