[Suggestion] Set one global PATH for all (kinds of) models

[jamartinh]

Currently, the are two places where models are downloaded:

I used:

LLMWareConfig.set_home("/data/llmware")

However the data folder

The $home$ for tools in:

/data/llmware/llmware_data/model_repo

and, even setting the home rest of models are downloaded into
XDG_CACHE
home/.cache/huggingface/hub

Perhaps it is better to have just one single configurable site for all model data since disks can get out of space.