Separate build for minified versions

[surgupta-msft]

Description

Currently same coretools build publish different artifacts for visual studio (minified versions - link) and cli/vscode. We can improve the build process to separate out visual studio artifacts and use symbol approach as below. This will make overall code simpler. After this we can cleanup the logic in this PR for IsMinifiedVersion() - #3825

In C# -

#if MINVERSION    
    internal const bool MIN_VERSION = true;
#else   
    internal const bool MIN_VERSION = false;
#endif

In csproj -

<PropertyGroup>
    <DefineConstants Condition="'$(MinVersion)' = 'true'">$(DefineConstants);MINVERSION</DefineConstants>
</PropertyGroup>

We also need overall engineering improvements in the build process here to change from dotnet build orchestration to msbuild