Autocompletion on code editor component (#10733)
* Update CodeMirror packages to use the autocompletion feature of lang-python
* Add autocomplete option to the Code component
* add changeset
* Add AutocompleteTheme
* Fix test
* Fix docstring
* Enable autocompletion on Playground
* add changeset
* add changeset
* Assign Tab to acceptCompletion
* Enable autocompletion in the playground mode of Lite apps
* add changeset
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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>
