"Add existing item as link" not available for Nemerle projects

[ssrmm]

C# projects offer the ability to add existing items as link (explanation with image). This option differs from the normal "Add existing item" because it does not copy the selected file, even if it is located outside of the project directory.

Nemerle projects don't have that option in the FileOpenDialog, which would come in handy in some situations.

For now one needs to add something like the following to the .nproj file:

<Compile Include="..\Path\To\File.n">
  <Link>LinkedFileName.n</Link>
</Compile>

See also aspnet/Tooling#147 where the same issue exists.