Removing ThreejsRenderer class and Threejs refs

[kalwalt]

Introduction

This PR will remove the ThreejsRenderer class and all the references to Three.js in the code. It's a necessary step to make the library free from any rendering engine and to provide alternative packages for different rendering engines.

Code details and changes

I removed the ThreejsRenderer class, but how a Threejs object is attached to te NFT marker? The most important thing is to pass the MatrixGL_RH coming from the Worker to the Threejs Object3d. To achieve this we use an event listener to pass the matrix data to the Threejs Object3D (the root object). This is done in the ARnftThreejs dev branch package now, that part of the code was originallly in the ThreejsRenderer class.

Possible issues

What happens if we use multi NFT markers in a row? They will pass the right NFT marker matrix? to prevent this issue i propose to add a uuid to the eventListener for every marker so it will get the right matrix data.
Inside Arnft we have:

ARnft/src/utils/Utils.js

Lines 133 to 134 in d4511c0

	const matrixGLrhEvent = new CustomEvent('getMatrixGL_RH', { detail: { matrixGL_RH: world } })
	document.dispatchEvent(matrixGLrhEvent)

If we add:

- const matrixGLrhEvent = new CustomEvent('getMatrixGL_RH', { detail: { matrixGL_RH: world } })
+ const matrixGLrhEvent = new CustomEvent('getMatrixGL_RH_<uuuid>', { detail: { matrixGL_RH: world } })

and providing the same uuid to ARnft-Threejs, wouldn't works?

• add a raw uuid mechanism to the EventListeners