lobby screen subsystem (#17686)

* lobby screen subsystem

* .

* tgui core 3.1.5

* use unknown in the class

* .

* second

* Didn't even know you could type components like this

* .

* dependency up

* can we not use any...

---------

Co-authored-by: ShadowLarkens <shadowlarkens@gmail.com>

code/modules/mob/new_player/login.dm

@@ -22,6 +22,7 @@
 	initialize_lobby_screen()
 
 	player_list |= src
+	GLOB.new_player_list += src
 
 	created_for = ckey
 

code/modules/mob/new_player/logout.dm

@@ -1,6 +1,7 @@
 /mob/new_player/Logout()
 	ready = 0
 
+	GLOB.new_player_list -= src
 	QDEL_NULL(lobby_window)
 	disable_lobby_browser()
 

code/modules/mob/new_player/new_player.dm

@@ -26,6 +26,7 @@
 	add_verb(src, /mob/proc/insidePanel)
 
 /mob/new_player/Destroy()
+	GLOB.new_player_list -= src
 	if(manifest_dialog)
 		QDEL_NULL(manifest_dialog)
 	if(late_choices_dialog)