[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/camera/cam-master_REF.gc

@@ -483,13 +483,7 @@
      #f
      )
     ((-> arg0 mode-name)
-     (let ((s5-1 (-> arg0 mode-name value)))
-       (set! (-> arg0 cam-mode) (the-as symbol (if (type? s5-1 state)
-                                                   s5-1
-                                                   )
-                                        )
-             )
-       )
+     (set! (-> arg0 cam-mode) (the-as symbol (the-as object (as-type (-> arg0 mode-name value) state))))
      (set! (-> arg0 real-entity-name) #f)
      #f
      )

test/decompiler/reference/jak2/engine/camera/cam-states_REF.gc

@@ -2619,11 +2619,7 @@
            )
          )
         ((or (logtest? (-> self options) (cam-slave-options-u32 BUTT_CAM))
-             (let ((s3-0 (handle->process (-> *camera* settings butt-handle))))
-               (if (type? s3-0 process-drawable)
-                   s3-0
-                   )
-               )
+             (the-as object (as-type (handle->process (-> *camera* settings butt-handle)) process-drawable))
              )
          (vector-normalize-copy! gp-3 (-> self view-flat) 1.0)
          (let ((v1-283 (handle->process (-> *camera* settings butt-handle))))