cityHash function now supports Decimal and UUID types

Why it matters

This feature extends the compatibility of the cityHash hashing function to Decimal and UUID types, enabling users to efficiently hash these data types directly. This fixes issue #5184 and improves performance and usability when working with these types.

How to use it

Users can now directly apply the cityHash function to columns or values of Decimal and UUID types in their queries without needing to cast or convert them.