feat: new settings stream_consume_batch_size_hint

[dantengsky]

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Summary

Introduce new settings stream_consume_batch_size_hint,

• by default, it is set to 0. in this case, stream_consume_batch_size_hint has no effects

if stream_consume_batch_size_hint is set to a non-zero value, streams will reference this setting during the process of capturing change sets and will try to keep the number of rows in the captured change set close to the specified value.

• MAX_BATCH_SIZE specified in the WITH clause have a higher priority

  e.g.

statement ok
create table t_settings (c int);

statement ok
CREATE STREAM s_t_settings ON TABLE t_settings;

statement ok
INSERT INTO t_settings values(1);

statement ok
INSERT INTO t_settings values(2);

statement ok
INSERT INTO t_settings values(3);

statement ok
set stream_consume_batch_size_hint = 2;

#########################################################
# max_batch_size specified in query has higher priority #
#########################################################

query I
select c from s_t_settings with (max_batch_size = 1);
----
1

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is