update_appearance (#55468)

Creates update_name and update_desc
Creates the wrapper proc update_appearance to batch update_name, update_desc, and update_icon together
Less non-icon handling code in update_icon and friends
Signal hooks for things that want to change names and descriptions
99%+ of the changes in this are just from switching everything over to update_appearance from update_icon

code/modules/modular_computers/file_system/programs/arcade.dm

@@ -32,7 +32,7 @@
 		game_active = FALSE
 		program_icon_state = "arcade_off"
 		if(istype(computer))
-			computer.update_icon()
+			computer.update_appearance()
 		ticket_count += 1
 		user?.mind?.adjust_experience(/datum/skill/gaming, 50)
 		sleep(10)
@@ -42,7 +42,7 @@
 		game_active = FALSE
 		program_icon_state = "arcade_off"
 		if(istype(computer))
-			computer.update_icon()
+			computer.update_appearance()
 		user?.mind?.adjust_experience(/datum/skill/gaming, 10)
 		sleep(10)
 
@@ -175,4 +175,4 @@
 			boss_id = rand(1,6)
 			pause_state = FALSE
 			if(istype(computer))
-				computer.update_icon()
+				computer.update_appearance()