Schoolgirl Outfit Resprited Renamed and GAGsified (#91871)

## About The Pull Request

Renames the schoolgirl costume to seifuku, the japanese name for sailor
style uniforms.
Resprites the uniform using GAGs.
Adds an 'adjust' style for the uniforms(rolled sleeves).
Tweaks the stock uniform colors from blue, red, green, and orange to
blue, red, teal, and tan.

stock options
blue, red, teal, tan. long sleeve/short sleeve

![dreamseeker_SZEV1Ql3XP](https://github.com/user-attachments/assets/5e183af5-816d-454c-b20b-353d849f3c91)

custom colors as example
+anyone sad about the sailor moon reference being replaced with more
basic colors dont worry you can still make them :)

![dreamseeker_ECcQewtUaI](https://github.com/user-attachments/assets/defb90a2-0c78-4119-a7b6-2f830b82b23e)
## Why It's Good For The Game

Updates the sprite to be more inline with our current clothes.
Makes the sprite in-game player customizable.
## Changelog
🆑
image: resprites the schoolgirl outfit using GAGs
/🆑

code/modules/admin/verbs/secrets.dm

@@ -590,8 +590,8 @@ ADMIN_VERB(secrets, R_NONE, "Secrets", "Abuse harder than you ever have before w
 					H.fully_replace_character_name(H.real_name,newname)
 					H.update_body_parts()
 					if(animetype == "Yes")
-						var/seifuku = pick(typesof(/obj/item/clothing/under/costume/schoolgirl))
-						var/obj/item/clothing/under/costume/schoolgirl/I = new seifuku
+						var/seifuku = pick(typesof(/obj/item/clothing/under/costume/seifuku))
+						var/obj/item/clothing/under/costume/seifuku/I = new seifuku
 						var/olduniform = H.w_uniform
 						H.temporarilyRemoveItemFromInventory(H.w_uniform, TRUE, FALSE)
 						H.equip_to_slot_or_del(I, ITEM_SLOT_ICLOTHING)