Added 3D Visualization. For now we can add proteins by coordinates, furthermore we can indicate whether they are of type H or not.
TODO is to add a json encoder to the HPModel so we can get a json string of the points. And also just a general method to visualize a HPModel as input, so we can test them visually aswell.
We also need to make the lines thicker, and add proper coloring based on whether its a H or not