pywin32: Complete modules using stubgen & stubtest

[Avasam]

This is the followup to #8825. It does 3 main things:

1. Use stubgen and stubtest to complete modules, and add missing modules.
2. Add more items to the allowlist (scripts, tests, demos, gui apps, private utils, deprecated and obsolete, etc. As well as items that fail due to import issues specific to stubtest)
3. Add all of the "shortcuts" (aliases? Not sure how to call them) to modules that can be called as root modules.* As well as win32com to win32extcom. These are how those modules are actually used and documented (ie: import win32con and import win32com rather than import win32.lib.win32con and import win32comext.). Though both are valid imports.
   

Some modules could not be fully generated with stubgen because of python/mypy#13822 . Some couldn't because win32ui needs to be imported first.
We can't run stubtest on the CI anyway because of #8660, but if we could, the same mypy issue would result in an error (I had to comment out the imports and delete the modules while testing locally)

* Is there a cleaner way to do this in stubs environment than adding a bunch of top-level modules? Which will result in a ton of *-stubs package when installed from PyPI?

[AlexWaygood]

Haven't reviewed in depth (cos 13,500 lines), but skimmed through -- nothing stands out as obviously incorrect. If there are any issues with specific parts, they can be fixed in followup PRs.

Thanks!

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

apprise (https://github.com/caronc/apprise)
- apprise/plugins/NotifyWindows.py:42: error: Cannot find implementation or library stub for module named "win32api"
- apprise/plugins/NotifyWindows.py:43: error: Cannot find implementation or library stub for module named "win32con"
- apprise/plugins/NotifyWindows.py:44: error: Cannot find implementation or library stub for module named "win32gui"

comtypes (https://github.com/enthought/comtypes)
- comtypes/test/test_win32com_interop.py:14: error: Cannot find implementation or library stub for module named "win32com.client"
- comtypes/test/test_win32com_interop.py:14: error: Cannot find implementation or library stub for module named "win32com"
- comtypes/test/test_dispinterface.py:47: error: Cannot find implementation or library stub for module named "win32com.client.dynamic"
- comtypes/test/test_comserver.py:100: error: Cannot find implementation or library stub for module named "win32com.client"