[decomp] better handling of animation code and art files (#1352)

* update refs

* [decompiler] read and process art groups

* finish decompiler art group selection & detect in `ja-group?`

* make art stuff work on offline tests!

* [decompiler] detect `ja-group!` (primitive)

* corrections.

* more

* use new feature on skel groups!

* find `loop!` as well

* fully fledged `ja` macro & decomp + `loop` detect

* fancy fixed point printing!

* update source

* `:num! max` (i knew i should've done this)

* Update jak1_ntsc_black_label.jsonc

* hi imports

* make compiling the game work

* fix `defskelgroup`

* clang

* update refs

* fix chan

* fix seek and finalboss

* fix tests

* delete unused function

* track let rewrite stats

* reorder `rewrite_let`

* Update .gitattributes

* fix bug with `:num! max`

* Update robotboss-part.gc

* Update goal-lib.gc

* document `ja`

* get rid of pc fixes thing

* use std::abs

test/decompiler/reference/engine/debug/viewer_REF.gc

@@ -35,23 +35,17 @@
 (defstate viewer-process (viewer)
   :code
   (behavior ()
-    (while #t
-      (let ((a0-0 (-> self skel root-channel 0)))
-        (set! (-> a0-0 frame-group) (-> self janim))
-        (set! (-> a0-0 param 0) (the float (+ (-> self janim data 0 length) -1)))
-        (set! (-> a0-0 param 1) 1.0)
-        (set! (-> a0-0 frame-num) 0.0)
-        (joint-control-channel-group! a0-0 (-> self janim) num-func-seek!)
-        )
+    (loop
+      (ja-no-eval :group! (-> self janim)
+                  :num!
+                  (seek! (the float (+ (-> self janim data 0 length) -1)))
+                  :frame-num 0.0
+                  )
       (until (ja-done? 0)
         (TODO-RENAME-9 (-> self align))
         (TODO-RENAME-10 (-> self align) 31 1.0 1.0 1.0)
         (suspend)
-        (let ((a0-3 (-> self skel root-channel 0)))
-          (set! (-> a0-3 param 0) (the float (+ (-> a0-3 frame-group data 0 length) -1)))
-          (set! (-> a0-3 param 1) 1.0)
-          (joint-control-channel-group-eval! a0-3 (the-as art-joint-anim #f) num-func-seek!)
-          )
+        (ja :num! (seek!))
         )
       )
     (none)