Add driver-side write batching of native frames

Description

Allow multiple messages to be sent in 1 buffer.

See CASSANDRA-5663.

Environment

None

Pull Requests

None

Assignee

Jorge Bay Gondra

Reporter

Jorge Bay Gondra

PM Priority

A

Fix versions

External issue ID

None

Doc Impact

None

Reviewer

None

Pull Request

None

Epic Link

None

Sprint

Size

S

Priority

Major
Configure