Removed the extension Linking class

[dotChris90]

• the class just existed for better use of NumSharp in other languages (F#, Powershell, Python, ...)
• Problem --> poor performance when go with this
• @dotChris90 @Oceania2018 were discuss in partial class NDArray<T> #72
• important design rule for the NumSharp Lib --> performance comes first!
• class was totally removed
• the better use of NumSharp in other languages must be done in separate projects (e.g. can do some NumSharp.Powershell, NumSharp.python Modules, ...)

[Oceania2018]

Agree with the better use of NumSharp in other languages must be done in separate projects (e.g. can do some NumSharp.Powershell, NumSharp.python Modules, ...)
@dotChris90 New a project in the src folder.