YQ-4474 support reading from local topics in YQL

[GrigoriyPA]

Changelog entry

Supported construction:

SELECT * FROM my_topic WITH (
    FORMAT = json_each_row,
    SCHEMA (
        key Int32,
        value String
    )
);

Also supported checkpoints, watermarks and shared reading for local topics (same as for external topics). Syntax for local and external topics is same.

Changelog category

• New feature

Description for reviewers

Reading from topics implemented via PQ provider same as reading from external topics, with one difference:

• Local topic client uses local rpc to create grpc actors in current AS

[ydbot]

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