[python-client] Support KeySharedPolicy in consumer configuration

Support for auto-hash and sticky-hash based policy (https://github.com/apache/pulsar/issues/4077) was added to cpp client (https://github.com/apache/pulsar/pull/7842) java (https://github.com/apache/pulsar/pull/5928) & go (https://github.com/apache/pulsar-client-go/pull/363) It would be great to have these changes ported to python client as well.

**Describe the solution you'd like**
Expose the ConsumerConfiguration::KeySharedPolicy and related setter/getter to Python client.

Comece pela configuração do consumidor do cliente Python e localize a interface ConsumerConfiguration::KeySharedPolicy; em seguida, compare as implementações relacionadas vinculadas para os clientes C++, Java e Go. A tarefa estará concluída quando o cliente Python expuser KeySharedPolicy e seu setter e getter relacionados de forma consistente com esses clientes.

Escrita pelo modelo de indexação a partir do texto da issue.