Create a UDF to create Catalogs

Many web application administration GUIs will not have superuser OS command line access for security reasons. Particularly those written in PHP. For those users we need an SQL way to create/drop Catalogs.

Whilst we have an SQL command for drop Catalog, the one for "CREATE CATALOG" does not handle the authentication tables, and are unlikely to exist in its current form in the end product.

A UDF will be created which will require the user to be a super user in the `def` Catalog that will allow the creation of a new Catalog, applying all relevant system tables.