Water Sponge quirk & Fatness Hiding Rework Tweaks

Added the Water Sponge quirk, it makes the user bloat when water is in their system and adds a few extra water-giving interactions to showers, vapors and water applications.
Tweaked fatness hiding, application has been separated from adjust_fatness who now calls it. Breathing also calls for hiders recalculations

code/modules/surgery/organs/lungs.dm

@@ -102,6 +102,7 @@
 
 /obj/item/organ/lungs/proc/check_breath(datum/gas_mixture/breath, mob/living/carbon/human/H)
 //TODO: add lung damage = less oxygen gains
+	H.water_check(breath)	//GS13 Water Sponge quirk
 	var/breathModifier = (5-(5*(damage/maxHealth)/2)) //range 2.5 - 5
 	if((H.status_flags & GODMODE))
 		return