Unlike the Steam and GOG support I'm not doing a registry search as I don't see anything in the registry that would show us the path. If we find more official ways to search for it later we can address that, in the meantime the path is just hardcoded to where it's installed by default.
- New msvc142 directory (keeping with naming after version of C compiler)
- Added SDL2.lib/SDL2main.lib back in (compiled from SDL 2.0.8 source from libsdl.org)
- Post build step to copy SDL2.dll to debug directory