Fix build

[Speedy37]

• Windows SDK 10.0.22000
• Missing files in vcxproj
• Missing milliseconds_now definition
• GitHub Action to detect this issues on push

[Speedy37]

I'll add a github action + fixes to make this build outside ExplorerPatcher project

[valinet]

Thanks, I have manually merged in the changes because I wanted to address the milliseconds_now more proper, in that I made a separate sws_utility.h header and prefixed it with sws_ as with all functions in this project.

Huge thanks for the pointers provided, and for contributing.