Upgrade Sphinx and Split api.rst

[Middledot]

Summary

self-explanatory

What is the feature request for?

The documentation

The Problem

Organization is very messy with one massive file. Having different "sections" of sorts per file (e.g. data models, commands, user creatable objects, voice, enums) would be better.

Also Sphinx's v5 breaks the current docs.

The Ideal Solution

Split the file and upgrade

The Current Solution

deal with it

Additional Context

No response