New mermaid tails

Adds new mermaid tails created by our very own Brad. Contains two variations:

- One without markings (one solid colour), Mermaid Alt. (Taur)
- One with koi like markings (three colours, two different marking colours), Mermaid Koi (Taur)

Neither of these have space suit sprites at this time, but I'm certain the base mermaid tail doesn't either.

code/modules/mob/new_player/sprite_accessories_taur_vr.dm

@@ -657,6 +657,45 @@
 	msg_prey_stepunder = "You jump over %prey's thick tail."
 	msg_owner_stepunder = "%owner bounds over your tail."
 
+/datum/sprite_accessory/tail/taur/altmermaid
+	name = "Mermaid Alt. (Taur)"
+	icon_state = "altmermaid_s"
+	can_ride = 0
+	icon_sprite_tag = "altmermaid"
+
+	msg_owner_help_walk = "You carefully slither around %prey."
+	msg_prey_help_walk = "%owner's huge tail slithers past beside you!"
+
+	msg_owner_help_run = "You carefully slither around %prey."
+	msg_prey_help_run = "%owner's huge tail slithers past beside you!"
+
+	msg_owner_disarm_run = "Your tail slides over %prey, pushing them down to the ground!"
+	msg_prey_disarm_run = "%owner's tail slides over you, forcing you down to the ground!"
+
+	msg_owner_disarm_walk = "You push down on %prey with your tail, pinning them down under you!"
+	msg_prey_disarm_walk = "%owner pushes down on you with their tail, pinning you down below them!"
+
+	msg_owner_harm_run = "Your heavy tail carelessly slides past %prey, crushing them!"
+	msg_prey_harm_run = "%owner quickly goes over your body, carelessly crushing you with their heavy tail!"
+
+	msg_owner_harm_walk = "Your heavy tail slowly and methodically slides down upon %prey, crushing against the floor below!"
+	msg_prey_harm_walk = "%owner's thick, heavy tail slowly and methodically slides down upon your body, mercilessly crushing you into the floor below!"
+
+	msg_owner_grab_success = "You slither over %prey with your large, thick tail, smushing them against the ground before coiling up around them, trapping them within the tight confines of your tail!"
+	msg_prey_grab_success = "%owner slithers over you with their large, thick tail, smushing you against the ground before coiling up around you, trapping you within the tight confines of their tail!"
+
+	msg_owner_grab_fail = "You squish %prey under your large, thick tail, forcing them onto the ground!"
+	msg_prey_grab_fail = "%owner pins you under their large, thick tail, forcing you onto the ground!"
+
+	msg_prey_stepunder = "You jump over %prey's thick tail."
+	msg_owner_stepunder = "%owner bounds over your tail."
+
+/datum/sprite_accessory/tail/taur/altmermaid/marked
+	name = "Mermaid Koi (Taur)"
+	icon_state = "altmermaid_s"
+	extra_overlay = "altmermaid_markings"
+	extra_overlay2 = "altmermaid_markings2"
+
 /datum/sprite_accessory/tail/taur/pawcow // this grabs suit sprites from the normal cow, the outline is the same
 	name = "Cow w/ paws (Taur)"
 	icon_state = "pawcow_s"
@@ -962,3 +1001,4 @@
 	name = "Naga (Taur, Fat, dual color)"
 	icon_state = "fatnaga_s"
 	extra_overlay = "fatnaga_markings"
+