Updates milkshake sprites, adds two milkshake recipes. (#70850)

## About The Pull Request
• Updates all milkshake sprites, specifically moving the weird glass lid
looking part.
• Attempts to preserve #70804 by keeping the same color scheme for the
straws.
• Adds in banana milkshakes, obtained by juicing bananas.
• Adds in strawberry milkshakes, obtained by juicing berries.

## Why It's Good For The Game
Additional milkshake flavors to complete the menu. Strawberry and banana
are almost as iconic as chocolate!
### Reasoning behind changing the sprites
New sprites remove the weird glass partition between shake and cream,
and removes the dome lid.

The chocolate milkshake was unusually dark beforehand. It looked like
coffee, almost. I've made real milkshakes before, using ice cream, milk,
ice and cocoa powder. Even with a _lot_ of cocoa powder, it isn't
getting dark as the old sprite. The new sprite is roughly what my
milkshakes looked like.

The straws have been changed to be angled instead of piercing straight
through the cream. I think it looks better angled too.

The vanilla shake previously looked far too yellow. Vanilla isn't _that_
yellow and it'd have confused players into thinking it might've been the
new banana milkshake.

## Sprites

![image](https://user-images.githubusercontent.com/53862927/198489748-78bbf87f-b11e-4f5e-a161-74b5bfcf4eb3.png)

![image](https://user-images.githubusercontent.com/53862927/198495882-b632883c-88a8-43d7-82e4-6f9f91af41c5.png)

## Changelog

:cl:
add: Banana and strawberry milkshakes! Made by juicing berries and
bananas respectively, with ice and cream.
/:cl:

Thanks for your time y'all, Happy Halloween.

code/modules/food_and_drinks/recipes/drinks/drinks_non-alcoholic.dm

@@ -47,6 +47,14 @@
 	results = list(/datum/reagent/consumable/choccyshake = 3)
 	required_reagents = list(/datum/reagent/consumable/coco = 1, /datum/reagent/consumable/ice = 1, /datum/reagent/consumable/cream = 1)
 
+/datum/chemical_reaction/drink/strawberryshake
+	results = list(/datum/reagent/consumable/strawberryshake = 3)
+	required_reagents = list(/datum/reagent/consumable/berryjuice = 1, /datum/reagent/consumable/ice = 1, /datum/reagent/consumable/cream = 1)
+
+/datum/chemical_reaction/drink/bananashake
+	results = list(/datum/reagent/consumable/bananashake = 3)
+	required_reagents = list(/datum/reagent/consumable/banana = 1, /datum/reagent/consumable/ice = 1, /datum/reagent/consumable/cream = 1)
+
 /datum/chemical_reaction/drink/pumpkin_latte
 	results = list(/datum/reagent/consumable/pumpkin_latte = 15)
 	required_reagents = list(/datum/reagent/consumable/pumpkinjuice = 5, /datum/reagent/consumable/coffee = 5, /datum/reagent/consumable/cream = 5)

code/modules/reagents/chemistry/reagents/drink_reagents.dm

@@ -891,6 +891,32 @@
 	chemical_flags = REAGENT_CAN_BE_SYNTHESIZED
 	glass_price = DRINK_PRICE_MEDIUM
 
+/datum/reagent/consumable/strawberryshake
+	name = "Strawberry Shake"
+	description = "A strawberry milkshake."
+	color = "#ff7b7b"
+	quality = DRINK_VERYGOOD
+	nutriment_factor = 8 * REAGENTS_METABOLISM
+	taste_description = "sweet strawberries and milk"
+	glass_icon_state = "strawberryshake"
+	glass_name = "strawberry shake"
+	glass_desc = "A strawberry flavored milkshake."
+	chemical_flags = REAGENT_CAN_BE_SYNTHESIZED
+	glass_price = DRINK_PRICE_MEDIUM
+
+/datum/reagent/consumable/bananashake
+	name = "Banana Shake"
+	description = "A banana milkshake. Stuff that clowns drink at their honkday parties."
+	color = "#f2d554"
+	quality = DRINK_VERYGOOD
+	nutriment_factor = 8 * REAGENTS_METABOLISM
+	taste_description = "thick banana"
+	glass_icon_state = "bananashake"
+	glass_name = "banana shake"
+	glass_desc = "A banana flavored milkshake."
+	chemical_flags = REAGENT_CAN_BE_SYNTHESIZED
+	glass_price = DRINK_PRICE_MEDIUM
+
 /datum/reagent/consumable/pumpkin_latte
 	name = "Pumpkin Latte"
 	description = "A mix of pumpkin juice and coffee."