[feat] HTTP-based IEventBus implementation for integration event bus

[ikesnowy]

Is your feature request related to a problem? Please describe.

Offers a HTTP-based IEventBus implementation for testing or development, offers a second option for critical service.

Describe the solution you'd like

HttpEventBus would try to send integration event directly through API call.

builder.AddCqrs().AddHttpEventBus(o => o.Publish<TestIntegrationEvent>().To(uri).To(uri2));