What you’ll want to do is to pick a 3D library (on the web, consider: three.js, babylon, etc.) and load the glTF file there. Once you’ve loaded the model into the engine, the engine would have its own API for changing lights and so on.
ps : Wondering why url’s not allowed in these forum, posts ?.
I think the forum software allows new users to post URLs only after a certain amount of usage, to prevent spam? I’m not sure exactly how that works.