Generate random UUID v4 identifiers. Supports bulk generation.
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify resources. UUID v4 uses random numbers, making collisions astronomically unlikely.
Standard format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where x is a random hex digit and y is one of 8, 9, a, or b.