Support dynamic create/update of entities using gaussian_splatting

[arvind-iyer]

If I create and insert an element into the DOM using the gaussian_splatting component during run-time rather than at the beginning, it is not loaded into the scene since it only runs loadData(...) on page load.

Likewise, if I update the src attribute of an existing element, it will not immediately update the scene with the new splat, that needs loadData to be run manually somehow

[Kevin-Miao]

+1. Just curious if you have been able to find any workarounds.

[arvind-iyer]

I think it might work if you add an update function to the component, something like this:

update: function(oldData) {
        this.loadData(this.el.sceneEl.camera.el.components.camera.camera, this.el.object3D, this.el.sceneEl.renderer, this.data.src);
	if (!!this.data.cutoutEntity) {
		this.cutout = this.data.cutoutEntity.object3D;
	}
}