Support path objs in components (#4581)
* Added support for Path objs in components(Video, Geallery, chatbot)
* added tests for pathlib.Path objs in Video, chatbot, Gallery
* added changes to docstrings and type annotations
* changelog
* formatting
* video
* fixing video docstring
* update
* Update test/test_components.py
* Update test/test_components.py
* formatting
* remaining components
* add pathlib to tests
* fix test
* formatting
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Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
