Adds Admin-only Antag HUDs

Togglable by a verb in the Admin tab. Only Rev, Cult, Ops and Shadowling
atm because the others don't have huds/have more than one hud and I'm
too lazy to handle it properly here. Also adds a debug verb for huds.

code/modules/admin/verbs/debug.dm

@@ -767,4 +767,12 @@ var/global/list/g_fancy_list_of_types = null
 	for(var/path in SSgarbage.noqdelhint)
 		dat += "[path]<BR>"
 
-	usr << browse(dat, "window=dellog")
+	usr << browse(dat, "window=dellog")
+
+/client/proc/debug_huds(i as num)
+	set category = "Debug"
+	set name = "Debug HUDs"
+	set desc = "Debug the data or antag HUDs"
+
+	if(!holder)	return
+	debug_variables(huds[i])