The previous VRMLLoader has produced many issues in the past because of it's line-by-line parsing approach. Although VRML is a very old 3D standard, it has still some significance in various areas like the scientific community. Because of this, I've decided to implement a new VRMLLoader from scratch.

The new loader use as lexer + parser built with chevrotain to convert the VRML into a JSON representation. In the next step, the loader builds a three.js scene similar to the previous one. So the loader is backwards-compatible but it's necessary to include the chevrotain lib in your code. However, this dependency of VRMLLoader will not be noticeable anymore with the JSM version in the future.

Using a lexer/parser approach makes the loader more robust and allows to retain the actual semantic of the VRML tree. Because of this, VRMLLoader can now handle more files than before.

The PR also added support for points, lines, textures, texture transforms and computes normals now according to the VRML standard. I've also created a new directory with some VRML test files that I've used to verify the correctness. But you can also see the difference with the official example.

If you closely compare the geometries of the house, you will see a noticeable improvement and a more consistent result compared to other viewers (e.g. Sketchfab).

This PR closes: #8282, #14814, #15725, #15281