Fixes mineral turfs having weird lighting (#71219)

## About The Pull Request

Pixel offsets, unlike transforms, offset overlays too. this was breaking
lighting overlays for mineral walls.

We did pixel offsets to save on init time, but we can acomplish the same
thing using an initial matrix. It's static, so there's no additional
cost. S free

Damn moth

## Changelog
🆑
fix: Mining walls won't have fucked lighting anymore
/🆑

code/__DEFINES/matrices.dm

@@ -0,0 +1,2 @@
+/// Helper macro for compile time translation
+#define TRANSLATE_MATRIX(offset_x, offset_y) matrix(1, 0, (offset_x), 0, 1, (offset_y))

code/game/turfs/closed/minerals.dm

@@ -2,8 +2,6 @@
 
 /**********************Mineral deposits**************************/
 
-#define MINERAL_WALL_OFFSET -4
-
 /turf/closed/mineral //wall piece
 	name = "rock"
 	icon = MAP_SWITCH('icons/turf/smoothrocks.dmi', 'icons/turf/mining.dmi')
@@ -17,10 +15,10 @@
 	plane = GAME_PLANE_UPPER
 	base_icon_state = "smoothrocks"
 
-	base_pixel_x = MINERAL_WALL_OFFSET
-	base_pixel_y = MINERAL_WALL_OFFSET
-	pixel_x = MAP_SWITCH(MINERAL_WALL_OFFSET, 0)
-	pixel_y = MAP_SWITCH(MINERAL_WALL_OFFSET, 0)
+	// This is static
+	// Done like this to avoid needing to make it dynamic and save cpu time
+	// 4 to the left, 4 down
+	transform = MAP_SWITCH(TRANSLATE_MATRIX(-4, -4), matrix())
 
 	temperature = TCMB
 	var/turf/open/floor/plating/turf_type = /turf/open/misc/asteroid/airless
@@ -35,7 +33,6 @@
 	///How long it takes to mine this turf without tools, if it's weak.
 	var/hand_mine_speed = 15 SECONDS
 
-#undef MINERAL_WALL_OFFSET
 
 /turf/closed/mineral/Initialize(mapload)
 	var/static/list/smoothing_groups = list(SMOOTH_GROUP_CLOSED_TURFS, SMOOTH_GROUP_MINERAL_WALLS)

tgstation.dme

@@ -117,6 +117,7 @@
 #include "code\__DEFINES\maps.dm"
 #include "code\__DEFINES\materials.dm"
 #include "code\__DEFINES\maths.dm"
+#include "code\__DEFINES\matrices.dm"
 #include "code\__DEFINES\MC.dm"
 #include "code\__DEFINES\mecha.dm"
 #include "code\__DEFINES\melee.dm"