Add timer function

[royalmustard]

Taco offers timers for encounters such as Sabetha or Dhuum. Ideally, this would be a generic system which can be fed configurations for encounters

[AsherGlick]

I had been thinking of ways to handle generic encounters like this and think this feature is desirable. If this feature were to be added right now it would need to be a custom gdscript module for each boss packed into the main executable, maybe they could share some underlying functionality though. However #2 or #21 could be alternatives for this in the future.

It looks like we are already passing the in combat flag in the data that is sent over from burrito_link to burrito so there wont need to be any changes to burrito link.