[decompiler] as-type and font method support (#3855)

Add support for `as-type` macro, and detecting inline font methods. This
works in all three games but I've only updated jak 3's goal_src for now.
Eventually I will go back and work through the others, but I want to get
more decompiler features in first.


![image](https://github.com/user-attachments/assets/5c31bf85-97b4-437c-bc4b-dc054e60551e)

---------

Co-authored-by: water111 <awaterford1111445@gmail.com>

test/decompiler/reference/jak2/engine/process-drawable/focus_REF.gc

@@ -43,12 +43,7 @@
   "If the focused process is not dead,
    check that the [[collide-spec]] of the focus and the process match."
   (when (and proc (not (logtest? (-> proc focus-status) (focus-status disable dead))))
-    (let* ((root (-> proc root))
-           (cshape (if (type? root collide-shape)
-                       root
-                       )
-                   )
-           )
+    (let ((cshape (as-type (-> proc root) collide-shape)))
       (and cshape (logtest? (-> this collide-with) (-> cshape root-prim prim-core collide-as)))
       )
     )