[Issue 342][consumer] add key shared policy support

[syklevin]

Fixes #342

Motivation

Add support for KeySharedPolicy with AutoSplit or Sticky mode for consumer, which is a useful for some user cases like scalable request-reply pattern.

Modifications

add key shared policy options for consumer, and a helpful constructor for validating hash range list

Verifying this change

• Make sure that the change passes the CI checks.

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

(or)

This change is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

(example:)

• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Does this pull request potentially affect one of the following parts:

If yes was chosen, please highlight the changes

• Dependencies (does it add or upgrade a dependency): (yes / no)
• The public API: (yes / no)
• The schema: (yes / no / don't know)
• The default values of configurations: (yes / no)
• The wire protocol: (yes / no)

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / GoDocs / not documented)
• If a feature is not applicable for documentation, explain why?
• If a feature is not documented yet in this PR, please create a followup issue for adding the documentation

[wolfstudy]

Cool, Thanks @syklevin work for this, the change LGTM +1

[wolfstudy]

@codelipenghui Can you help review this change?