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/mob/mob_helpers.dm

@@ -379,7 +379,7 @@ It's fairly easy to fix if dealing with single letters but not so much with comp
 
 /proc/item_heal_robotic(mob/living/carbon/human/H, mob/user, brute_heal, burn_heal)
 	var/obj/item/bodypart/affecting = H.get_bodypart(check_zone(user.zone_selected))
-	if(affecting && affecting.status == BODYPART_ROBOTIC)
+	if(affecting && affecting.is_robotic_limb())
 		var/dam //changes repair text based on how much brute/burn was supplied
 		if(brute_heal > burn_heal)
 			dam = 1