[OPENENGSB-3633] Add nuget folder and packages to the .gitignore

[OPENENGSB-3633] Add nuget folder and packages to the .gitignore
[OPENENGSB-3634] delete binary from the sample-xlink-cshapr-client project
[OPENENGSB-3635] Allow Nuget to automaticaly restore the .Nuget package in the sample-xlink-cshapr-client