Allow loading NuGet assemblies from CSX
This is "must have" feature, if CSX should be really usable one day.
We should be able to install nuget package and reference it from CSX without specifying relative or absolute path to the assembly.
What's the problem:
First of all, when we update nuget package to newer version, the path changes, which leads to runtime exceptions
Second, it may not be trivial to determine, where the nuget packages are stored, since it may vary between environments (build server, dev machine, etc..)