0.44.0: Drop the `value:` parameter name from the various PackedArray.* append

• New IntersectRayResult strong type from Estevan Hernandez

• Generates various native_structures, and also surfaces a handful of
  APIs that take pointers (those that exposed 'const void*' and
  'AudioFrame*') and were not available before. Additioanl
  pointer-based APIs will come, but there are some ambiguities and
  areas where we could surface a better API than just pointers, so I
  am explicitly going slow here, to avoid having to write a lot of
  additional compatibility hacks later.

• The append methods in PackedArray classes no longer take a "value: "
  parameter, although a version is kept for compatibility.

• The append methods now use the natural type for the array they
  contain, which should reduce the amount of casts necessary. That
  is, in the past we surfaced "append(value: Int64)" for the
  PackedArrayInt32, which was odd.

  Now:

  • PackedByteArray.append takes a UInt8
  • PackedFloat32Array.append takes a Float
  • PackedInt32Array.append takes a Int32