SignalR Integration for Event handlers in MVC Endpoints.

**Adds signalR Support to MVC Endpoints**
When a user adds new subscriber for events in MVCEndpoints, there will be a recommendation to add SignalR Integration. This is also available via a Context Menu option (only for MVC Endpoints).

Adding SignalR support to a handler will:
1. Add the necessary SignalR Nuget packages needed in the endpoint
2. Will generate the necessary hub code and the broadcast handler needed
3. Will modify the TestController and the TestController view to show the event integration via SignalR.

Any remaining issues / bugs will now be addressed in the develop branch.