feature: extend Response API about faststream

[Flosckow]

Do I understand correctly that it is necessary to change all "SpecificBroker".Response classes, transfer variables that are in the "SpecificBroker".publisher.use case to the init method ("SpecificBroker".Response)?
And why is the body: "SendableMessage" parameter specified in Response, and in the publish methods we have message: "SendableMessage"

[Lancetnik]

@Flosckow yes, you undestood all things correctly.

About message VS body. I used message in broker.publish and publisher.publish interfaces due they should be used by user directly and it is explicit argument name for such usage. In the Response class I used body name due Response is whole object to publish (with body, headers and other options).

But, you point is correct and we should think about it again.

[Flosckow]

Ok, I'll wait for an answer. Сan you link this pull request? #1607