Deprecate use_auth_token

[IlyasMoutawwakil]

What does this PR do?

This PR deprecates use_auth_token in favor of token

Fixes # (issue)

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

[HuggingFaceDocBuilderDev]

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[IlyasMoutawwakil]

I tried to add warning at the beginning of every function/method that used to accept use_auth_token, then only pass token wich occasionally gets assigned use_auth_token's value. This works with transformers and hugingface_hub functions/methods but not diffusers (some still take use_auth_token only which I commented in loaders)

[echarlaix]

Looks great @IlyasMoutawwakil, could you add a test to OVModelIntegrationTest as done in optimum

[IlyasMoutawwakil]

i added a test (that passes) but some cases still fail, like loading+exporting from a private repo, but it's an issue from optimum side.