UPP Floor Symbol (#6962)

# About the pull request

Adds a UPP floor Symbol to the game, akin to the USCM symbol in the
Almayer briefing.

All credit to Crowford for the sprites. 

# Explain why it's good for the game

Cosmetics for mappers. 


# Testing Photographs and Procedure
<summary>Screenshots & Videos</summary>

![Screenshot 2024-08-17 14 06
00](https://github.com/user-attachments/assets/e00812c6-394e-4f10-a864-10a59aad8b67)




# Changelog
:cl: Steelpoint, Crowford
imageadd: A UPP faction floor symbol has been added for mappers to use. 
/:cl:

---------

Co-authored-by: Steelpoint <[email protected]>
Co-authored-by: Zonespace <[email protected]>

code/game/objects/effects/decals/floor_symbol.dm

@@ -0,0 +1,53 @@
+/obj/effect/decal/floor_symbol
+	icon = 'icons/turf/upp_floor.dmi'
+	icon_state = "upp_c"
+	name = "\improper UPP Logo"
+	layer = WEED_LAYER
+
+/obj/effect/decal/floor_symbol/westface
+	icon_state = "upp_directional"
+
+/obj/effect/decal/floor_symbol/westface/southwest
+	dir = SOUTHWEST
+
+/obj/effect/decal/floor_symbol/westface/north
+	dir = NORTH
+
+/obj/effect/decal/floor_symbol/westface/east
+	dir = EAST
+
+/obj/effect/decal/floor_symbol/westface/west
+	dir = WEST
+
+/obj/effect/decal/floor_symbol/westface/northeast
+	dir = NORTHEAST
+
+/obj/effect/decal/floor_symbol/westface/southeast
+	dir = SOUTHEAST
+
+/obj/effect/decal/floor_symbol/westface/northwest
+	dir = NORTHWEST
+
+/obj/effect/decal/floor_symbol/northface/
+	icon_state = "upp_directional1"
+
+/obj/effect/decal/floor_symbol/northface/southwest
+	dir = SOUTHWEST
+
+/obj/effect/decal/floor_symbol/northface/north
+	dir = NORTH
+
+/obj/effect/decal/floor_symbol/northface/east
+	dir = EAST
+
+/obj/effect/decal/floor_symbol/northface/west
+	dir = WEST
+
+/obj/effect/decal/floor_symbol/northface/northeast
+	dir = NORTHEAST
+
+/obj/effect/decal/floor_symbol/northface/southeast
+	dir = SOUTHEAST
+
+/obj/effect/decal/floor_symbol/northface/northwest
+	dir = NORTHWEST

colonialmarines.dme

@@ -1041,6 +1041,7 @@
 #include "code\game\objects\effects\step_triggers.dm"
 #include "code\game\objects\effects\temporary_visuals.dm"
 #include "code\game\objects\effects\decals\crayon.dm"
+#include "code\game\objects\effects\decals\floor_symbol.dm"
 #include "code\game\objects\effects\decals\hefa_cult_decals.dm"
 #include "code\game\objects\effects\decals\kutjevo_decals.dm"
 #include "code\game\objects\effects\decals\medical_decals.dm"