Fixes #8954 - splits 'attack log' preference, spam-be-gone (#8992)

* Fixes #8954

* projectile reagetns

* removes all attack logs on keyless simple_animals even by keyed mobs

* deletes 'potentially'

* Tiger request

* more comprehensive solution

* check for mob

* istype

* brevity

* Split attack logs preference

* toggle

* deletes old CHAT_ATTACKLOGS

* explains what levels do when toggling them

* clarification

* Tigercat requests

code/modules/client/preference/preferences.dm

@@ -90,6 +90,7 @@ var/global/list/special_role_times = list( //minimum age (in days) for accounts
 	var/UI_style_alpha = 255
 	var/windowflashing = TRUE
 	var/clientfps = 0
+	var/atklog = ATKLOG_ALL
 
 	//ghostly preferences
 	var/ghost_anonsay = 0