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/computers/item/computer.dm

@@ -62,7 +62,7 @@
 	idle_threads = list()
 	if(looping_sound)
 		soundloop = new(list(src), enabled)
-	update_icon()
+	update_appearance()
 
 /obj/item/modular_computer/Destroy()
 	kill_program(forced = TRUE)
@@ -168,21 +168,16 @@
 	. += get_modular_computer_parts_examine(user)
 
 /obj/item/modular_computer/update_icon_state()
-	if(!enabled)
-		icon_state = icon_state_unpowered
-	else
-		icon_state = icon_state_powered
+	icon_state = enabled ? icon_state_powered : icon_state_unpowered
+	return ..()
 
 /obj/item/modular_computer/update_overlays()
 	. = ..()
 	if(!display_overlays)
 		return
-	if(enabled)
-		if(active_program)
-			. += active_program.program_icon_state ? active_program.program_icon_state : icon_state_menu
-		else
-			. += icon_state_menu
 
+	if(enabled)
+		. += active_program?.program_icon_state || icon_state_menu
 	if(obj_integrity <= integrity_failure * max_integrity)
 		. += "bsod"
 		. += "broken"
@@ -217,7 +212,7 @@
 		if(looping_sound)
 			soundloop.start()
 		enabled = 1
-		update_icon()
+		update_appearance()
 		ui_interact(user)
 		return TRUE
 	else // Unpowered
@@ -353,7 +348,7 @@
 	var/mob/user = usr
 	if(user && istype(user))
 		ui_interact(user) // Re-open the UI on this computer. It should show the main screen now.
-	update_icon()
+	update_appearance()
 
 // Returns 0 for No Signal, 1 for Low Signal and 2 for Good Signal. 3 is for wired connection (always-on)
 /obj/item/modular_computer/proc/get_ntnet_status(specific_action = 0)
@@ -380,7 +375,7 @@
 	if(loud)
 		physical.visible_message("<span class='notice'>\The [src] shuts down.</span>")
 	enabled = 0
-	update_icon()
+	update_appearance()
 
 /**
  * Toggles the computer's flashlight, if it has one.