Fixed AABOX2D collision

- Discovered that the AABOX2D format is not (unk, min, max) but is
  (center, unk, size)
- center is the "center" of the rect as an offset from the actor vPos
- size is the (w, h) of the box
- unk seems to be 0 in the examples i'm working with
- to render the box ( (cx, cy), u, (w, h) ), the coordinates are:
  - left: vPos.x + cx - w/2
  - right: vPos.x + cx + w/2
  - top: vPos.y + cy - h/2
  - bottom: vPos.y + cy + h/2

src/mercury_engine_data_structures/formats/collision.py

@@ -20,7 +20,7 @@
 )
 CollisionPolyDread = Struct(
     num_points=Rebuild(UInt, construct.len_(construct.this.points)),
-    unk=Float,
+    unk=Hex(UInt),
     points=Array(construct.this.num_points, CollisionPoint),
     loop=Flag,
     boundings=Array(4, Float),
@@ -38,9 +38,9 @@
 
 collision_formats = {
     "AABOX2D": Struct(
-        unknown1=UInt,
-        min=CVector2D,
-        max=CVector2D,
+        center=CVector2D,
+        unk=Float,
+        size=CVector2D,
     ),
     "CIRCLE": Struct(
         value1=Float,