Explicitly adds all referenced assemblies of the currently executing process. Also adds default namespaces.

Useful in .NET Core to ensure that all those little tiny system assemblies that comprise NetCoreApp.App etc. dependencies get pulled in.

For full framework this is less important as the base runtime pulls in all the system and system.core types.

Alternative: use LoadDefaultReferencesAndNamespaces() and manually add

public void AddLoadedReferences()