Add exllamav2 better (#27111)
* add_ xllamav2 arg
* add test
* style
* add check
* add doc
* replace by use_exllama_v2
* fix tests
* fix doc
* style
* better condition
* fix logic
* add deprecate msg
* deprecate exllama
* remove disable_exllama from the linter
* remove
* fix warning
* Revert the commits deprecating exllama
* deprecate disable_exllama for use_exllama
* fix
* fix loading attribute
* better handling of args
* remove disable_exllama from init and linter
* Apply suggestions from code review
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>
* better arg
* fix warning
* Apply suggestions from code review
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>
* switch to dict
* Apply suggestions from code review
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>
* style
* nits
* style
* better tests
* style
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Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>
