Add guide on Client state and and fix default values of components (#7830)
* add guide and default values
* add changeset
* reset session
* fix
* add changeset
* fix tests'
* Update guides/08_gradio-clients-and-lite/01_getting-started-with-the-python-client.md
Co-authored-by: Ali Abdalla <ali.si3luwa@gmail.com>
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Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Ali Abdalla <ali.si3luwa@gmail.com>