A UUID class that stringifies to URL-safe base64.
WebUUIDs are represented as bytes (Uint8Array) and converted to strings on-demand.
This class implements toString and toJSON for better language integration,
as well as inspection for node and Deno for a better development experience.
For the most part, WebUUID can be used where UUID strings are used,
except for equality checks. For those cases, WebUUID provides quick access
to the string representations via the id field.