various lil additions and fixes

- new trait: lipolifier immunity (WIP version, possibly breaks corn oil gains)
- new event: lipolifier vent clog (WIP)
- removed cum vent clog events
- finished working on fatbeam (new sprites)

code/modules/reagents/chemistry/reagents/food_reagents.dm

@@ -448,11 +448,17 @@
 /datum/reagent/consumable/cornoil
 	name = "Corn Oil"
 	description = "An oil derived from various types of corn."
-	nutriment_factor = 20 * REAGENTS_METABOLISM
 	value = 4
 	color = "#302000" // rgb: 48, 32, 0
 	taste_description = "slime"
 
+/datum/reagent/consumable/sprinkles/on_mob_life(mob/living/carbon/M)
+	if(M && !HAS_TRAIT(M, TRAIT_LIPOIFIER_IMMUNE))
+		target.nutrition += 20 * REAGENTS_METABOLISM
+	else:
+		target.nutrition += 1
+	..()
+
 /datum/reagent/consumable/cornoil/reaction_turf(turf/open/T, reac_volume)
 	if (!istype(T))
 		return