Deprecate commands from the transformers-cli that are in the hf-cli

[LysandreJik]

Commands that are both in the transformers-cli and in the huggingface-cli are deprecated here and will be quickly removed.

I'm voting for deprecating them and not removing them even though better ways exist as I suspect some users to use the transformers-cli in bash scripts to automatically upload models to the hub.

Context from @julien-c:

my thoughts is that we should deprecate the subset of transformers-cli command that are in huggingface-cli, as the commands are identical and having both is confusing.

Transformers-specific commands (model conversion, new model templating) can stay in transformers-cli.

What do you think?

[julien-c]

my reason for removing (still keeping a descriptive error obviously) rather than deprecating is that I'd love to know if people actually use those (and if they do, do they use them in scripts or manually)

But I will defer to the great transformers-maintainers as the final decision 💖

[sgugger]

We will know for sure after people ignore the deprecation warnings and complain in v5 when we actually remove them ;-)
But we go to convoluted lengths to avoid breaking changes in situations way smaller than this, so I feel very strongly about going through the normal deprecation cycle and wait for a major release before removing.

[julien-c]

sounds good to me!