feature: add Chinese version dir

[gottaegbert]

this is just showing if my process was right, I only translate first 3 markdown files.

[javagl]

Great. Do you have an idea about how to handle the images?

There are some images that only show a texture (without any text). These could be take directly from the main tutorial.
Some images show text, but mainly technical terms like "bufferView". These could probably also taken from the main tutorial.
But some images do contain text. I'm not sure about the effort for translating them.
(The details can probabaly be decided later, on a case-by-case basis, or as you see fit)

[gottaegbert]

Yes. For the images I think keep the same first since I cant replace them quickly.. but if there are some images needs to be translate maybe I can do it in a new way or add the Chinese text below?

[javagl]

There are not so many images that contain much text. I think that keeping the original ones (and maybe adding the Chinese text below) is fine. We can decide later if we want to create new images that include the Chinese text.