Implement `ALTER COLUMN SET DATA TYPE` statement in connectors

[ebyhr]

• [ ] JDBC based connectors
  • [x] Postgres: https://github.com/trinodb/trino/pull/15591
  • [ ] SQL Server: We need to specify all existing column properties (e.g. NOT NULL, DEFAULT)
  • [ ] ClickHouse: https://github.com/trinodb/trino/pull/16702
• [x] Iceberg #15651
• [ ] Delta Lake
• [ ] Hive https://github.com/trinodb/trino/pull/15938
• [ ] Hudi https://hudi.apache.org/docs/schema_evolution#altering-columns
• [x] MongoDB https://github.com/trinodb/trino/pull/15889
• [ ] BigQuery (depending on #15158 as the test uses CTAS query)

[subkanthi]

Hi @ebyhr , I'm working on adding MODIFY COLUMN set datatype support for ClickHouse. Added #16702

[ebyhr]

RFC for changing column type in Delta Lake: https://github.com/delta-io/delta/blob/master/protocol_rfcs/type-widening.md