Use git submodule instead of duplicating things

[haesleinhuepf]

Hi @SeverusYixin ,

great to see this repository! Just one suggestion: instead of copying stuff (e.g. the resources folder from the training repository), you can use git-submodules. That way you also don't need to sychronize this folder again and again. Read more:
https://git-scm.com/book/en/v2/Git-Tools-Submodules

Let me know if that makes sense.

Best,
Robert

[SeverusYixin]

that is fantastic