[FLINK-29751][sql-client] Implement a new ClientResult for sql client to wrap the result returned by sql gateway

[yuzelin]

What is the purpose of the change

The result returned by sql gateway is ResultSet but the current ResultStore accepts a TableResult. So we introduce a ClientResult to wrap it.

Brief change log

• implement ClientResult.

Verifying this change

This change is a component of further feature, I will add tests later.

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

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths (performance sensitive): no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
• The S3 file system connector: no

Documentation

• Does this pull request introduce a new feature? yes
• If yes, how is the feature documented? JavaDoc

[flinkbot]

CI report:

• f817aaf Azure: FAILURE

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