Some rework on the skin.dmf (#20494)

Removed the use of deprecated parameter icon-size.
Uniformed all clients to use fit to screen.
Fit to viewport is automatically attempted at login.
Statusbar is now hidden by default, giving more screen space.
Toggle fullscreen now works as expected, for even more screen space.

---------

Co-authored-by: Matt Atlas <mattiathebest2000@hotmail.it>
Co-authored-by: realmattatlas <liermattia@gmail.com>

code/modules/mob/login.dm

@@ -104,6 +104,9 @@
 	update_client_color()
 	add_click_catcher()
 
+	if(client) //Should work based on "change_view" but we lack the infrastructure behind to make it useful, for now
+		client.attempt_auto_fit_viewport()
+
 	if(machine)
 		machine.on_user_login(src)
 

code/modules/mob/mob.dm

@@ -125,7 +125,7 @@
 
 /client/verb/typing_indicator()
 	set name = "Show/Hide Typing Indicator"
-	set category = "Preferences"
+	set category = "Preferences.Game"
 	set desc = "Toggles showing an indicator when you are typing emote or say message."
 	prefs.toggles ^= HIDE_TYPING_INDICATOR
 	prefs.save_preferences()