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/program.dm

@@ -66,7 +66,7 @@
 // Relays icon update to the computer.
 /datum/computer_file/program/proc/update_computer_icon()
 	if(computer)
-		computer.update_icon()
+		computer.update_appearance()
 
 // Attempts to create a log in global ntnet datum. Returns 1 on success, 0 on fail.
 /datum/computer_file/program/proc/generate_network_log(text)
@@ -221,7 +221,7 @@
 				program_state = PROGRAM_STATE_BACKGROUND // Should close any existing UIs
 
 				computer.active_program = null
-				computer.update_icon()
+				computer.update_appearance()
 				ui.close()
 
 				if(user && istype(user))