Explore use of VCPkg to manage dependencies

[michael-okeefe]

• Follow the instructions to set up vcpkg and add our current dependencies
• Remove all submodules
• Ensure project builds correctly under the vcpkg setup
• Test on Windows, Mac, Linux (manually or via the CI)

VCPkg seems like a great way to manage dependencies. My understanding is that it works out of the box on Windows (Visual Studio) and can be enabled through cmake for all other platforms. This task would explore seeing what it would take to set up VCPkg for GTest and any other dependencies we have (as opposed to submodules).

[michael-okeefe]

Note: hold off for now until we can discuss as a company/team. There is concern that 1) it is yet another dependency, and 2) it is still relatively young. I don’t want that to stop us from exploring it though.