[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/ui/progress/progress_REF.gc

@@ -1116,7 +1116,7 @@
     )
   :code
   (behavior ()
-    (while #t
+    (loop
       (when (hud-hidden?)
         (dotimes (gp-0 (-> self nb-of-particles))
           (if (= (-> self particles gp-0 part matrix) -1)
@@ -2122,7 +2122,7 @@
     )
   :code
   (behavior ()
-    (while #t
+    (loop
       (when (and (cpad-hold? 0 l1) (cpad-hold? 0 r1) *cheat-mode*)
         (when (and (< (-> self task-index) (-> *level-task-data* (-> self display-level-index) nb-of-tasks))
                    (>= (-> self task-index) 0)
@@ -2452,7 +2452,7 @@
     )
   :code
   (behavior ()
-    (while #t
+    (loop
       (seekl! (-> self in-out-position) 0 (the int (* 170.0 (-> *display* time-adjust-ratio))))
       (when (< (-> self in-out-position) 2867)
         (seekl!
@@ -2490,7 +2490,7 @@
     )
   :code
   (behavior ()
-    (while #t
+    (loop
       (seekl!
         (-> self transition-offset)
         512
@@ -2523,7 +2523,7 @@
     )
   :code
   (behavior ()
-    (while #t
+    (loop
       (cond
         ((cpad-pressed? 0 left)
          (if (> (-> self current-debug-string) 0)