Add the possibility of using return_logits_vocab from Ctranslate2

[pierrepv8]

As latest version of Ctranslate2 generate method allow passing return_logits_vocab to include the log probs in its output.
Would it be possible to expose a parameter to return_logits_vocab in FasterWhisperPipeline.transcribe() method ?

[MahmoudAshraf97]

it should be possible, but I can't think of a way to do it without breaking compatibility withCT2 versions that do not support this