Additional external events for message failures

[seanfarmar]

Requested by a customer.

We would like ServiceControl to publish additional external events in order to be able to implement our error_log clean up. We need events when a failed message is archived or resolved. These correspond to the following internal events:

https://github.com/Particular/ServiceControl/blob/master/src/ServiceControl/Contracts/MessageFailures/FailedMessageArchived.cs

https://github.com/Particular/ServiceControl/blob/master/src/ServiceControl/Contracts/MessageFailures/MessageFailureResolvedByRetry.cs

https://github.com/Particular/ServiceControl/blob/master/src/ServiceControl/Contracts/MessageFailures/MessageFailureResolvedManually.cs