AzureServiceBusOption.cs and RabbitMqOptions.cs files were removed as they're no longer needed. The system now defers the configuration of MassTransit and AzureServiceBus to the application layer (Program.cs). The configuration for PrefetchCount is also allowed at the transport-level. A new abstraction, ConsumerTypeDefinition, collects all the consumer types with their respective definitions if provided. Adjustments have been made in related extension methods and classes to reflect these changes.
