WIP: Docs draft for integration with DVC

[aguschin]

This is a draft for the docs - how this should look for a user after we integrate GTO artifacts.yaml part into DVC

https://mlem-ai-gto-dvc-nrmufqqihx13et.herokuapp.com/doc/gto/get-started-dvc/

cc @dberenbaum to check this out

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[dberenbaum]

Looks good @aguschin! Just a few details to work out. Thanks!