Admin shortcut for converting ghosts to humans (tgstation#24157)

Used CtrlShiftClick as it's a largely (entirely?) unused combination, meaning it won't interfere with anything, but still act as a shortcut

code/modules/mob/dead/observer/observer.dm

@@ -782,3 +782,8 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 			SSpai.recruitWindow(src)
 	else
 		usr << "Can't become a pAI candidate while not dead!"
+
+/mob/dead/observer/CtrlShiftClick(mob/user)
+	if(isobserver(user) && check_rights(R_SPAWN))
+		change_mob_type( /mob/living/carbon/human , null, null, TRUE) //always delmob, ghosts shouldn't be left lingering
+