Support for HTTP response compression

[dkropachev]

Jira task: https://scylladb.atlassian.net/browse/DRIVER-629
Jira epic: https://scylladb.atlassian.net/browse/DRIVER-55

Copied from Jira epic DRIVER-55:

Core PR that added gzip and deflat compression: scylladb/scylladb#27454

Core issue: scylladb/scylladb#27246

Task:

1. Add response gzip and deflate compression.
2. Have integraion tests.
3. Add section to README.md with clear text if it is suported and which compression is supported.

Migrated from GitHub issue: scylladb/alternator-load-balancing#163

[dkropachev]

Implemented by #59.