Port of https://github.com/tgstation/tgstation/pull/51817
Adds a mech vs mech combat system for the toy mechs earned from arcades and found around the station. You can initiate combat with yourself by hitting a toy mech with another toy mech, or fight another player if you attack a player holding a mech with a mech.
Each mech has its own health stat and special ability that they'll use in combat against each other. How exciting!
Also slightly refactors toy locations and changes toy mechs from being JUST prizes to their own proper toy subtype!
More tweaks to IPC fixes.
Merge resolution/compile fixes.
Further work on properly integrating, updating and fixing prosthetic options.
Repathed internal organs to organ/internal.
More work on full synthetics, changelings, overheating.
Working on getting organs to qdel properly and spawn properly when robotized.
Finalized some overheating values, added remaining prosthetic icons.
Finalizing the testing version of the full prosthetic bodies branch.
Added suit cyclers to the autolathe and map.
Fixing runtime errors.
Fixing errors.
Changelog.
Replacing limb and organ strings with constants.
Prevented brainless species from becoming full cyborgs.
Fixed issues with brain/MMIs renaming themselves inappropriately.
Various fixes and oversights.
Moves them away from 'tie' legacy - path change, and different code files.
Changed single hastie var into accessories list, to allow multiple articles worn at same time. Updated all affected places in code to work with it.
Currently any number of decorative accessories can be attached, one utility (holster/webbing) and one armband.
