move terratorh inner source and open source

[romeokienzler]

Idea:

• We have an open source upstream terratorch -> pip install terratorch
• We have an enterprise addon -> pip install terratorch_enterprise (on top of the open source code)

[Joao-L-S-Almeida]

@romeokienzler Could you provide more specifications/details ?

[romeokienzler]

todos:

• how is it possible to use open source upstream TT but can use internal models, do we need to replace timm? @romeokienzler investigating