Generate UUID v4, UUID v1, and GUID identifiers instantly
UUID v4: Randomly generated. Most common format for unique identifiers.
UUID v1: Time-based with MAC address. Useful for chronological sorting.
GUID: Microsoft's implementation of UUID, commonly used in Windows and .NET.
Format: xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx where M is version and N is variant.