Adds Root Beer (#4500)

-Adds R&D Root Beer to reagents (no recipes)
-Adds R&D Root Beer to Robust Soft Drinks Dispenser
-Adds R&D Root Beer can sprite
-Adds R&D Root Beer in-glass sprite

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm

@@ -1330,6 +1330,19 @@
 	glass_name = "glass of Dr. Gibb"
 	glass_desc = "Dr. Gibb. Not as dangerous as the name might imply."
 
+/datum/reagent/drink/root_beer
+	name = "R&D Root Beer"
+	id = "root_beer"
+	description = "A classic Earth drink from the United Americas province."
+	color = "#211100"
+	adj_drowsy = -6
+	adj_temp = -5
+	taste_description = "sassafras and anise soda"
+
+	glass_icon_state = "root_beer_glass"
+	glass_name = "glass of R&D Root Beer"
+	glass_desc = "A glass of bubbly R&D Root Beer."
+
 /datum/reagent/drink/space_up
 	name = "Space-Up"
 	id = "space_up"

code/modules/reagents/reagent_containers/food/cans.dm

@@ -135,3 +135,13 @@
 	. = ..()
 	reagents.add_reagent("koispasteclean", 10)
 	reagents.add_reagent("phoron", 5)
+
+/obj/item/weapon/reagent_containers/food/drinks/cans/root_beer
+	name = "\improper R&D Root Beer"
+	desc = "A classic Earth drink from the United Americas province."
+	icon_state = "root_beer"
+	center_of_mass = list("x"=16, "y"=10)
+
+/obj/item/weapon/reagent_containers/food/drinks/cans/root_beer/Initialize()
+	. = ..()
+	reagents.add_reagent("root_beer", 30)