Add generateULID function, closes #36536

Why it matters

The generateULID function provides a standardized way to create unique, sortable identifiers that combine timestamp and randomness. This improves data organization and uniqueness in distributed systems where ordering and uniqueness are critical.

How to use it

Use the generateULID() function in your SQL queries to generate a ULID value. Example usage:

SELECT generateULID() AS ulid_value;