* Move litter to `treatment`
* Move eden object attributes to `treatment`
* Move treatment items to `treatment`
* Move bodybag handling to `treatment`
* Move state conditions to `statemachine`
* Move radio addon handling to `feedback`
* Move medical macros to `engine`
* Move medical extension to `damage`
* Fix texture and material paths after move
* Remove duplicate medical menu config
* Remove old faction class
* Remove a bunch of old code
Improves the way medical is storing variables in object space by having
a common list of variables names as macros. Makes the code a bit cleaner
and ensured consistency across components. Also a handy reference for
when working on medical to see what values are all stored.
