New Medbot Sprites (#89152)

## About The Pull Request


https://github.com/user-attachments/assets/a57e9bd2-8e00-4ab4-86de-9facba477955


![medbots_flat](https://github.com/user-attachments/assets/6846a7bc-29d8-4dd2-a8ef-dc65eb57ca03)


![image](https://github.com/user-attachments/assets/c83941cf-a883-48f7-922f-2b6424939765)

Resprites medbots and related sprites - stacked mediborg skin,
assemblies

## Why It's Good For The Game

Consistent with the new medkits

## Changelog

🆑
image: New medbot sprites
image: New stacked medibot borg skin sprite
/🆑

code/game/objects/items/storage/medkit.dm

@@ -179,7 +179,7 @@
 	damagetype_healed = BURN
 
 /obj/item/storage/medkit/fire/get_medbot_skin()
-	return "ointment"
+	return "burn"
 
 /obj/item/storage/medkit/fire/suicide_act(mob/living/carbon/user)
 	user.visible_message(span_suicide("[user] begins rubbing \the [src] against [user.p_them()]self! It looks like [user.p_theyre()] trying to start a fire!"))
@@ -230,7 +230,7 @@
 	damagetype_healed = OXY
 
 /obj/item/storage/medkit/o2/get_medbot_skin()
-	return "o2"
+	return "oxy"
 
 /obj/item/storage/medkit/o2/suicide_act(mob/living/carbon/user)
 	user.visible_message(span_suicide("[user] begins hitting [user.p_their()] neck with \the [src]! It looks like [user.p_theyre()] trying to commit suicide!"))
@@ -281,7 +281,7 @@
 	damagetype_healed = HEAL_ALL_DAMAGE
 
 /obj/item/storage/medkit/advanced/get_medbot_skin()
-	return "advanced"
+	return "adv"
 
 /obj/item/storage/medkit/advanced/PopulateContents()
 	if(empty)