feat: add support for multimodal in Vertex (#1338)
* feat: add support for multimodal in Vertex
* Nit changes and remove tools if multimodal
* revert model name change
* Fix tools/multimodal condition
* chores(lint): fix formatting
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Co-authored-by: Thomas <thomas.poc@gmail.com>
Co-authored-by: Nathan Sarrazin <sarrazin.nathan@gmail.com>
