More posters!!! (#94361)

## About The Pull Request

adds more posters
<img width="681" height="113" alt="image"
src="https://github.com/user-attachments/assets/55b1f611-68a6-4675-a7bf-8816a900685d"
/>

idea for PRing this and all sprites belong to:
https://github.com/PiotrTheTchaikowsky

## Why It's Good For The Game

more silly posters = fvn

## Changelog

🆑
image: Added 2 new contraband and 1 new official posters.
/🆑

code/game/objects/effects/poster_motivational.dm

@@ -152,6 +152,8 @@
 	When people read this poster they'll feel better!"
 	icon_state = "bike"
 
+// Departmental posters
+
 /obj/item/poster/quirk/cargo_logo
 	poster_type = /obj/structure/sign/poster/quirk/cargo_logo
 	quirk_poster_department = ACCOUNT_CAR

code/game/objects/effects/posters/contraband.dm

@@ -845,3 +845,17 @@ MAPPING_DIRECTIONAL_HELPERS(/obj/structure/sign/poster/contraband/bojack, 32)
 	icon_state = "double_rainbow"
 
 MAPPING_DIRECTIONAL_HELPERS(/obj/structure/sign/poster/contraband/double_rainbow, 32)
+
+/obj/structure/sign/poster/contraband/vodka
+	name = "Vodka"
+	desc = "The text is written entirely in Russian. You can barely read anything except the word 'BODKA'."
+	icon_state = "vodka"
+
+MAPPING_DIRECTIONAL_HELPERS(/obj/structure/sign/poster/contraband/vodka, 32)
+
+/obj/structure/sign/poster/contraband/ninja
+	name = "Ninja"
+	desc = "Greetings from the Spider Clan."
+	icon_state = "ninja"
+
+MAPPING_DIRECTIONAL_HELPERS(/obj/structure/sign/poster/contraband/ninja, 32)

code/game/objects/effects/posters/official.dm

@@ -429,3 +429,11 @@ MAPPING_DIRECTIONAL_HELPERS(/obj/structure/sign/poster/official/boombox, 32)
 	icon_state = "download_gun"
 
 MAPPING_DIRECTIONAL_HELPERS(/obj/structure/sign/poster/official/download, 32)
+
+/obj/structure/sign/poster/official/mining
+	name = "Undiscovered Species"
+	desc = "A poster showing one of the Ash Walker species. We still know very little about them, be a pioneer! \
+	When people read this poster they'll feel better!"
+	icon_state = "ashwalkers"
+
+MAPPING_DIRECTIONAL_HELPERS(/obj/structure/sign/poster/official/mining, 32)