Add better request and response implementations.

[fristonio]

• Add a better request implmentation for client which is closely integrated with https://github.com/fristonio/docker.rs/blob/master/src/api/api_utils.rs#L5

Important features we need with the request structure is support for Streams.

• A better place for Response implementation. https://github.com/fristonio/docker.rs/blob/master/src/utils.rs#L18