[Feature] Queen Respawn Timer

[rahlzel]

Code and line numbers involved:

• Drone.dm
• A timer similar to what the Respawn verb uses
• An event that happens on Queen death that starts the above timer, either in queen.dm or perhaps by hooking into the Queen Locator HUD function, though this may be really hacky.

Pseudo code would be something akin to:

if queen dies
   start timer

if Drone uses Evolve verb
   check time left on timer and output it to Drone
else 
   evolve into queen

The proposed time between Queens is at the moment 20 minutes.

[rahlzel]

Making a note for future reference: https://github.com/jaggerestep/ColonialMarines/blob/master/code/modules/mob/living/carbon/alien/humanoid/queen.dm#L38-L42

This is in the code but doesn't seem to be working right. I've never seen the notification. If it can be fixed this is probably the best place for the feature.