Process and convert .svg files in `Image` (#6500)
* process and convert svg files with cariosvg
* add changeset
* remove svg2png and keep svg format
* add svg image test
* formatting
* revert typing format
* update docstrings
* Remove postprocessing change
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
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Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
