This commit does the following;
- Repairs mob breathing by adding a new ticker process, mob_master, as
air_master is an unreliable ticker with it's customizable speed
- Restore firedoor attack_hand access
- You can now open and close firedoors by using no item, provided you
have access to them and they aren't locked.
This commit ports the base system of LINDA from TG. This version of linda
is the original version, with none of -tg-'s fixes, rewrites, or other
such improvements attached.
The mob ignite system has been 100% removed, as LINDA does not support
this normally. It may be added back in when the improvements and refactors
to LINDA have been ported.
