[I/O] Enable using CrateDB-specific DDL statements on `ctk load` interface

## About
@wierdvanderhaar suggested to improve the `ctk load` interface such that the target table can be created with CrateDB-specific features like partitioned table, and friends. Thanks.

The issue identifies only the `ctk load` interface; start by locating that entry point and reviewing how it currently creates target tables. The issue names no files or tests, so first clarify which CrateDB-specific DDL statements and expected behavior are in scope before implementation and verification.

Written by the indexing model from the issue text.