Adding frameworks support

Adding support for other framework

Getting the current activity scope:

ActivityScope.Current.Id
ActivityScope.Current.Name
ActivityScope.Current.ParentId

Getting the name of the http correlation header:

CorrelatorSharp.Headers.CorrelationId

Creating a new scope:

using CorrelatorSharp;

using (ActivityScope scope = new ActivityScope("Main Operation")) {
    DoWork();
}