Update dotnet-projects.md

* [Radical](https://github.com/RadicalFx/radical) (MVVM framework)
* [Snoop Wpf](https://github.com/cplotts/snoopwpf) (The WPF Spy Utility)
* [EasyNetQ](https://github.com/mikehadlow/EasyNetQ) (fx for RabbitMQ)
* [AzureNetQ](https://github.com/Roysvork/AzureNetQ) (porting of EasyNetQ for Azure service bus)
* [WpfToolkit](https://github.com/dotnetprojects/wpftoolkit) (fork of MS WPF Toolkit with additional features)