Hostile Lockdown Optimizations + Bolt lights

- Shock-bolting all doors has been made more efficient on the server.
This greatly reduces lag potential for AIs using it as a door crush.

- Introduced a small cooldown (three BYOND seconds) in a further
optimization to remove a critical exploit.

- Due to the way the new code works, the module no longer triggers
firealarms but closes the locks directly. 

<b>To compensate for this, bolt lights on airlocks will remain on.</b> 
Instead of red fire alarm lights, all the airlocks will have bolt lights. Bolt lights can still be manually disabled for direct targeting purposes.