Crystal foam - crystallizer new recipe (#60535)

Adds crystal foam, a crystal grenade made in the crystallizer from CO2, N2O and H2O. When used it will release a big foamed area that will close any breaches, similar to the smart foam grenade.

code/game/objects/items/grenades/atmos_grenades.dm

@@ -96,3 +96,33 @@
 		var/turf/open/floor_loc = turf_loc
 		floor_loc.atmos_spawn_air("n2o=[n2o_gas_amount / distance_from_center];TEMP=273")
 	qdel(src)
+
+/obj/item/grenade/gas_crystal/crystal_foam
+	name = "crystal foam"
+	desc = "A crystal with a foggy inside"
+	icon_state = "crystal_foam"
+	var/breach_range = 7
+
+/obj/item/grenade/gas_crystal/crystal_foam/detonate(mob/living/lanced_by)
+	. = ..()
+
+	var/datum/reagents/first_batch = new
+	var/datum/reagents/second_batch = new
+	var/list/datum/reagents/reactants = list()
+
+	first_batch.add_reagent(/datum/reagent/aluminium, 75)
+	second_batch.add_reagent(/datum/reagent/smart_foaming_agent, 25)
+	second_batch.add_reagent(/datum/reagent/toxin/acid/fluacid, 25)
+	reactants += first_batch
+	reactants += second_batch
+
+	var/turf/detonation_turf = get_turf(src)
+
+	chem_splash(detonation_turf, breach_range, reactants)
+
+	playsound(src, 'sound/effects/spray2.ogg', 100, TRUE)
+	log_game("A grenade detonated at [AREACOORD(detonation_turf)]")
+
+	update_mob()
+
+	qdel(src)

code/modules/atmospherics/machinery/components/gas_recipe_machines/atmos_machines_recipes.dm

@@ -182,3 +182,11 @@ GLOBAL_LIST_INIT(gas_recipe_meta, gas_recipes_list())
 	energy_release = 6000000
 	requirements = list(/datum/gas/hypernoblium = 100, /datum/gas/stimulum = 100)
 	products = list(/obj/item/fuel_pellet/exotic = 1)
+
+/datum/gas_recipe/crystallizer/crystal_foam
+	id = "crystal_foam"
+	name = "Crystal foam grenade"
+	reaction_type =  EXOTHERMIC_REACTION
+	energy_release = 140000
+	requirements = list(/datum/gas/carbon_dioxide = 150, /datum/gas/nitrous_oxide = 100, /datum/gas/water_vapor = 25)
+	products = list(/obj/item/grenade/gas_crystal/crystal_foam = 1)