message: KHR_lights_punctual: add all default light values
diff: @@ -4737,8 +4737,14 @@ static int cgltf_parse_json_light(cgltf_options* options, jsmntok_t const* token
  {
  CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
  + out_light->color[0] = 1.f;
  + out_light->color[1] = 1.f;
  + out_light->color[2] = 1.f;
  out_light->intensity = 1.f;
  + out_light->spot_inner_cone_angle = 0.f;
  + out_light->spot_outer_cone_angle = 3.1415926535f / 4.0f;
  +
  int size = tokens[i].size;
  ++i;
  