readded 2 GS events

- readded fattening vent clog
- readded cargo snack attack

GainStation13/code/modules/events/vent_clog.dm/vent_clog.dm

@@ -0,0 +1,27 @@
+
+
+/datum/round_event_control/vent_clog/fattening
+	name = "Clogged Vents: Fattening"
+	typepath = /datum/round_event/vent_clog/fattening
+	max_occurrences = 2
+	min_players = 5
+	description = "Spits out lipoifier foam through the scrubber system."
+
+/datum/round_event/vent_clog/fattening
+	reagentsAmount = 50
+
+/datum/round_event/vent_clog/fattening/announce()
+	priority_announce("The scrubbers network is experiencing an unexpected surge of lipo-related chemicals. Some ejection of contents may occur.", "Atmospherics alert")
+
+/datum/round_event/vent_clog/fattening/start()
+	for(var/obj/machinery/atmospherics/components/unary/vent in vents)
+		if(vent && vent.loc && !vent.welded)
+			var/datum/reagents/R = new/datum/reagents(1000)
+			R.my_atom = vent
+			R.add_reagent(/datum/reagent/consumable/lipoifier, reagentsAmount)
+
+			var/datum/effect_system/foam_spread/foam = new
+			foam.set_up(200, get_turf(vent), R)
+			foam.start()
+		CHECK_TICK
+