GitLab

* Add type hints for MGP STR model

* Add missing type hints for plbart model

* Add type hints for Pix2struct model

* Add missing type hints to Rag model and tweak the docstring

* Add missing type hints to Sam model

* Add missing type hints to Swin2sr model

* Fix a type hint for Pix2StructTextModel
Co-authored-by: Matt <Rocketknight1@users.noreply.github.com>

* Fix typo on Rag model docstring
Co-authored-by: Matt <Rocketknight1@users.noreply.github.com>

* Fix linter

---------
Co-authored-by: Matt <Rocketknight1@users.noreply.github.com>