Introduce support for the TIME data type conversions

[bpintea]

This PR adds support for the TIME data type, recently introduced in ES/SQL.

It allows driver conversions to/from it; allowed source/target data types are DATETIME, TIME and strings.

The PR also:

• fixes the C-to-SQL conversions for DATE and
• updates the data types used by unit tests with the definitions currently provided by ES/SQL.