Column description export generating DDL for DB2

**Is your feature request related to a problem? Please describe.**
When exporting as DDL a table in DB2 the column comments are missing. This is an option for other db's but not DB2.

**Describe the solution you'd like**
Have the option to create column descriptions during DDL generation.

**Describe alternatives you've considered**
I don't see any alternatives to this, other than manually modifying the generated DDL.

**Additional context**
Similar feature is available for Postgresql. See https://github.com/orgs/dbeaver/discussions/11984#discussioncomment-7467276