hoo boy

replaces all mentions of bodypart_robotic with is_robotic_limb() where possible, adds BODYPART_HYBRID, adds helpers for organic / robotic limbs (is_robotic_limb() / is_organic_limb(), with a arg to override it accepting hybrid limbs)
Also makes the the surgery to heal robotic limbs work if the torso isn't a robot, but rather if there are robotic bodyparts, makes the IPC brain repair.. only accept IPC brains (obviously), makes the damage threshholds for robo-limbs vars instead of a fix 25 with hybrid ones predefined at 25 / 15 (trigger / mindamage), adds an error message to fixing them if already at theshhold, etc. Now just for replacing BODYPART_ORGANIC with is_organic_limb aswell where applicable.. also actual values for the other robo limbs. Fun!

code/modules/surgery/limb_augmentation.dm

@@ -10,7 +10,7 @@
 	if(istype(tool, /obj/item/organ_storage) && istype(tool.contents[1], /obj/item/bodypart))
 		tool = tool.contents[1]
 	var/obj/item/bodypart/aug = tool
-	if(aug.status != BODYPART_ROBOTIC)
+	if(aug.is_robotic_limb())
 		to_chat(user, "<span class='warning'>That's not an augment, silly!</span>")
 		return -1
 	if(aug.body_zone != target_zone)