feat: convert ULID to UUID and vice versa

[jvalerodev]

Added functions to convert a ULID to a UUID, and vice versa.

For example:

const ULID = ulid(); // 01HHAGK730AEX50PA89H1ZG25T
const UUID = ULIDtoUUID(ULID); // 018c5509-9c60-53ba-5059-484c43f808ba
const toULID = UUIDtoULID(UUID); // 01HHAGK730AEX50PA89H1ZG25T

Solving the issue: #28

[perry-mitchell]

I'll release this a bit later today..

[perry-mitchell]

Published under 2.3.0