Closes #1987 - Updates AutoAPI Documentation

[Ethan-DeBandi99]

Closes #1987

• Updates files to include client facing functions in __all__ to ensure they are documented. Files where everything is client facing do not require __all__.
• Updates some helper functions to prefix with _. This does not include all that exist, but this will be an ongoing process.
• Updates formatting of DocStrings to ensure that they render properly in GitHub pages.
• Removes files that do not contain any client facing code from being included in the AutoAPI documentation creation.
  • arkouda/message.py
  • arkouda/_version.py
  • arkouda/decorators.py
• Updates pydoc/conf.py to set autoapi_options to ['members', 'undoc-members', 'show-inheritance', 'show-module-summary', 'imported-members', ] as opposed to using the default. This removes private-members and special-members. This prevents private functions (_func_name) from being included in the AutoAPI docs. It also prevents functions like __len__() from being rendered in the AutoAPI.

This PR does not address missing DocStrings. A separate issue will be put in to update missing DocStrings.

[jaketrookman]

Style changes look good

[stress-tess]

Looks good to me! Well done running on this down!

I saw a couple of small things but I imagine we're gonna find a lot of them over the next few months