Make iceberg table target split size configurable

[ZacBlanco]

We should have a way to set a table's target split size for the Iceberg connector in Presto. The current default is 128MB and in some cases generates too much overhead. We should be able to set the target split size in order to tune the performance of some or all queries.

Expected Behavior or Use Case

We should be able to set the target split size either via table properties or session properties.

Presto Component, Service, or Connector

Iceberg connector.

Possible Implementation

• Add session property to configure split size for all queries in a session (overrides table property)
• Add support for target split size in ALTER TABLE ... SET PROPERTIES statement

Context

During table scan planning within the Iceberg connector, we generate splits based on the iceberg table's read.split.target-size property. For while there was no easy way to set table properties. However #21495 introduced this feature, but still doesn't allow setting arbitrary properties unless we update the set of supported table properties in IcebergAbstractMetadata#setTableProperties.

We should introduce support for setting the table property size to allow tuning this parameter on Iceberg tables.

[ZacBlanco]

This implemented in #24417