SPECIES NUKING 2023: Mein leber! Allows livers to handle reagents in special ways, instead of the species datum doing it (#76184)

## About The Pull Request

Refactors livers so special chemical handling can be done by them,
instead of the species datum.
Plasmamen, skeletons and golems all use the liver for all their species
specific chem handling now.

## Why It's Good For The Game

SPECIES DATUM I HATE YOU!
Also, being able to handle reagents like any species if you have their
liver is REALLY FREAKING COOL and allows for emergent gameplay by mixing
various organs from various sources.

## Changelog

🆑
refactor: Mutant livers can now handle chemicals in special ways.
Currently, only plasmaman, skeleton and golem livers do it. Every other
species is the same.
/🆑

---------

Co-authored-by: Time-Green <7501474+Time-Green@users.noreply.github.com>

code/datums/components/food/golem_food.dm

@@ -43,7 +43,7 @@
 		source.balloon_alert(user, "not edible!")
 		return COMPONENT_CANCEL_ATTACK_CHAIN
 	if (!snack_type.can_consume(target))
-		source.balloon_alert(user, "incompatible mineral!")
+		source.balloon_alert(user, "can't consume!")
 		return COMPONENT_CANCEL_ATTACK_CHAIN
 	if (!golem_snack)
 		golem_snack = new(