[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/jak3/engine/target/target-handler_REF.gc

@@ -359,11 +359,7 @@
     2.0
     0.0
     (let* ((f30-0 (penetrate-using->damage s0-0))
-           (s2-0 arg0)
-           (s5-0 (if (type? s2-0 process-focusable)
-                     (the-as process-focusable s2-0)
-                     )
-                 )
+           (s5-0 (as-type arg0 process-focusable))
            (s2-1 (and s5-0 (focus-test? s5-0 dead hit)))
            )
       (set! sv-96