Preliminary support for Visual Studio 2022

[aybe]

This is my small contribution to the project, not really a C++ pro so you may want to adjust a few things!

I have been able to fix and get the project to build by generating an .sln file using cmake-gui.

• std::experimental namespace isn't needed anymore
• some imgui members have been renamed
• some includes are apparently needed now
• glm doesn't have to be linked as it's a header-only library now

But there's one thing I'm not happy about it but I couldn't figure out how to do without:

64775c700ab33f65fe4e30612a2f48cf5c726ad8

I simply removed the embedded vcpkg in favor of my own in c:\vcpkg, this is because I haven't been able to get the embedded one to detect the VS2022 installation.

[aybe]

I just squashed the commits for you.

As on what would be the best to do, you'll be the judge, I'm a C++ noob so I can't really tell...

[VelocityRa]

I don't intend on merging external PRs for this project, sorry! It was a personal project done for the fun of it and I probably won't touch it again. Thank you anyway. :)

[aybe]

Alright mate, great project and thanks for sharing it anyway :)