GitLab

Update Unitxt task to  use locally installed unitxt and not download Unitxt code from Huggingface (#2514)

* Moved to require unitxt installation and not download unitxt from HF hub.

This has performance benefits and simplifies the code.
Signed-off-by: Yoav Katz <katz@il.ibm.com>

* Updated watsonx documentation

* Updated installation instructions

* Removed redundant comman

* Allowed unitxt tasks to generate chat APIs

Modified WatsonXI model to support chat apis

* Removed print

* Run precommit formatting

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Signed-off-by: Yoav Katz <katz@il.ibm.com>