Simplify setting FileVersion and InformationalVersion

[gabrielweyer]

Currently if I want to set the MSBuild FileVersion and InformationalVersion properties this is the code I have to write:

new DotNetCoreMSBuildSettings()
    .SetVersion(assemblyVersion)
    .WithProperty("FileVersion", packageVersion)
    .WithProperty("InformationalVersion", packageVersion)
    .WithProperty("nowarn", "7035");

There is no helper for setting FileVersion and InformationalVersion and as I use semantic versioning I get a compilation warning:

What I would like to be able to write is:

new DotNetCoreMSBuildSettings()
    .SetVersion(assemblyVersion)
    .SetFileVersion(packageVersion)
    .SetInformationalVersion(packageVersion)
    .SuppressVersionRecommendedFormatWarning();