Container based configuration

[sweetlandj]

Introduce a container abstraction that can be used to register Platibus components such as:

• IMessageQueueingService
• ISubscriptionTrackingService
• ITransportService
• IMessageJournalingService
• SendRule (collection)
• Subscription (collection)
• HandlingRule (collection)
• IConfigurationHook (collection)

This would enable external dependencies to be injected i.e. into an IConfigurationHook implementation and message handlers without relying on assembly scanning and service locators.