Readability Pass to Advanced Medical Tools (tgstation#82225)

Update the sprites of the advanced surgical toolset, giving them
distinct colors and updating their lighting to reduce shades and
increase visual readability at normal resolutions.

![image](https://github.com/tgstation/tgstation/assets/32783144/4daa4f95-2415-4d60-a666-361ebfc52281)

![image](https://github.com/tgstation/tgstation/assets/32783144/b3dfba7b-3db9-42ab-b088-a6e592a3297a)

![image](https://github.com/tgstation/tgstation/assets/32783144/65efec62-aaec-4e86-8a3c-5a57aa08198e)

Currently, the advanced surgical toolset over-relies on the tooltip to
communicate item state quickly and accurately. This PR adds both color
differentials, and enhances the shape of the existing tools to help a
player tell them apart quickly and accurately. Additionally, it assists
in defining the general shape of the item with cleaned up shading to
decrease noisy patterns in the sprite.
:cl:
image: Updated the Advanced Surgical Tool's sprites
code: Updated the Advanced Surgical Tool's light code
/:cl:

code/modules/surgery/tools.dm

@@ -78,7 +78,7 @@
 	w_class = WEIGHT_CLASS_NORMAL
 	toolspeed = 0.7
 	light_system = OVERLAY_LIGHT
-	light_outer_range = 1
+	light_outer_range = 1.5
 	light_color = COLOR_SOFT_RED
 
 /obj/item/cautery/advanced/Initialize(mapload)
@@ -101,7 +101,13 @@
 /obj/item/cautery/advanced/proc/on_transform(obj/item/source, mob/user, active)
 	SIGNAL_HANDLER
 
-	tool_behaviour = (active ? TOOL_DRILL : TOOL_CAUTERY)
+	if(active)
+		tool_behaviour = TOOL_DRILL
+		set_light_color(LIGHT_COLOR_BLUE)
+	else
+		tool_behaviour = TOOL_CAUTERY
+		set_light_color(LIGHT_COLOR_ORANGE)
+
 	balloon_alert(user, "lenses set to [active ? "drill" : "mend"]")
 	playsound(user ? user : src, 'sound/weapons/tap.ogg', 50, TRUE)
 	return COMPONENT_NO_DEFAULT_MESSAGE
@@ -338,7 +344,7 @@
 	w_class = WEIGHT_CLASS_NORMAL
 	toolspeed = 0.7
 	light_system = OVERLAY_LIGHT
-	light_outer_range = 1
+	light_outer_range = 1.5
 	light_color = LIGHT_COLOR_BLUE
 	sharpness = SHARP_EDGED
 
@@ -366,10 +372,10 @@
 
 	if(active)
 		tool_behaviour = TOOL_SAW
-		set_light_range(2)
+		set_light_color(LIGHT_COLOR_ORANGE)
 	else
 		tool_behaviour = TOOL_SCALPEL
-		set_light_range(1)
+		set_light_color(LIGHT_COLOR_BLUE)
 
 	balloon_alert(user, "[active ? "enabled" : "disabled"] bone-cutting mode")
 	playsound(user ? user : src, 'sound/machines/click.ogg', 50, TRUE)