Add Microsoft Documentation

# Feature request

## Summary

Please add the documentation from the following Microsoft sources listed below (more or less in order of importance), or as much as possible from it.

The existing search for these docs is lacking and an index doesn't exist. The offline version of the docs is _huge_, broken, unmaintained, and the search and index don't work either.
Furthermore, it would be convenient to have a single source for this documentation and other documentation DevDocs currently hosts (e.g. cppreference for which DevDocs also gives a superior search and index to what cppreference provides).

- https://github.com/MicrosoftDocs/windows-driver-docs
- https://github.com/MicrosoftDocs/windows-driver-docs-ddi
- https://github.com/MicrosoftDocs/sdk-api/
- https://github.com/MicrosoftDocs/win32
- https://github.com/MicrosoftDocs/cpp-docs
- https://github.com/MicrosoftDocs/windows-dev-docs
- https://github.com/MicrosoftDocs/winrt-api
- https://github.com/MicrosoftDocs/winrt-related
- https://github.com/MicrosoftDocs/Console-Docs
- https://github.com/MicrosoftDocs/windowsserverdocs
- https://github.com/MicrosoftDocs/PowerShell-Docs
- https://github.com/MicrosoftDocs/windows-powershell-docs
- https://github.com/MicrosoftDocs/Virtualization-Documentation
- https://github.com/MicrosoftDocs/windows-itpro-docs/
- https://github.com/MicrosoftDocs/visualstudio-docs

You could also add documentation from other repositories under https://github.com/MicrosoftDocs, such as:
- https://github.com/MicrosoftDocs/WSL/
- https://github.com/MicrosoftDocs/msix-docs/

The license for the documentation in all of those sources is [CC-BY-4.0](https://github.com/MicrosoftDocs/windows-driver-docs/blob/staging/LICENSE) which allows modification and distribution according to my understanding. The license for the code samples in the documentation is [MIT](https://github.com/MicrosoftDocs/windows-driver-docs/blob/staging/LICENSE-CODE).

### References

- https://github.com/freeCodeCamp/devdocs/issues/158
Says the license is incompatible, but old - from 2015. The license now allows modification and distribution.
- https://github.com/freeCodeCamp/devdocs/issues/2102
New but unclear. Says the the "docs need to be available under a free license". I don't know what you consider free, but CC-BY-4.0 looks "free enough" to me. The cppreference docs you provide are licenses under CC-BY-SA-3.0 which is more restrictive, so I gather CC-BY-4.0 is good enough.
- https://trello.com/c/PVnfdeaN
Says that "most docs by Apple / Microsoft / Adobe, are released under restrictive licenses (no redistribution) incompatible with DevDocs", but again this is not the case with regard to the Microsoft documentation listed above.