Add an easy way to publish exceptions

[dotnetprofessional]

Apps often need to publish exceptions that can be consumed by one or more handlers. The code require typically would like like:

context.publish({ type: MessageException.typeName, message: new MessageException(error, message as any) });

This is tedious, and as its something that would be common, the proposal is to add an additional method to the context which would allow for the following instead:

context.publishException(errorMessage);