decomp: credits (#533)

* decomp: `credits` but there are still issues

* issues over creating a `new` `font-context`

* decomp: finalized `credits`

goal_src/engine/game/game-save.gc

@@ -5,3 +5,5 @@
 ;; name in dgo: game-save
 ;; dgos: GAME, ENGINE
 
+;; TODO - for credits
+(define-extern print-game-text (function string font-context symbol int int float)) ; TODO decomp error, this seems correct though

goal_src/engine/game/main.gc

@@ -9,3 +9,6 @@
   "Are we in a movie?"
   (nonzero? (logand (-> *kernel-context* prevent-from-run) (process-mask movie)))
   )
+
+;; TODO - for credits
+(define-extern scf-get-territory (function int))