Rename README_EGL_MSVC.txt to README_FEATURES_MSVC.txt, as we now have
more features that can be included in the builds using the Visual
Studio projects, which require additional depedencies and manual
enabling.
Specifically, this outlines how the font tweaking feature in libgtk can
be enabled and for people who wish to do so, how to enable the Font
Features demo in gtk3-demo.exe.
Like the Visual Studio 2012+ projects, copy the Visual Studio 2010
projects and replace the items in there as needed, so that we can
obtain Visual Studio 2022 project files, since they are all in the
MSBuild format.
