LightingModel: New class struct

[sunag]

Related issue: #25170

Description

The Lighting Model can now be extended and have internal parameters, thus making the system more organized. This concept follows the one implemented in the customization of lights and materials.

const lighingModel = new PhongLightingModel();

// force lambert
lighingModel.specular = false;

const lighingModel = new PhysicalLightingModel();

// force standard
lighingModel.clearcoat = false;
lighingModel.sheen = false;