Reduce size of cmds/__init__.pyi

[Muream]

This file is very large (currently over 100k lines) and is over the limit of what Pycharm can load by default.
Users that have bumped up that limit (as recommended in the readme) have noticed some performance loss in pycharm.

I also suspect it being the cause of Pylance crashing in vscode

There's currently two ways I can think of reducing that file size:

1. Strip the docstrings and make each function definition just take one line - This reduces the line count from 100k+ to ~1000 but we lose valuable information
2. Split that file into multiple subfiles - The only drawback is that it would make editors think that things like this is valid: from maya.cmds.createNode import createNode when it really isn't
   • One file per command?
   • One file per letter of the alphabet?