Make Kotlin's `Uuid` automatically wrapped

[cies]

While Uuid is still marked as experimental, it is in the last phases of becoming stdlib. It is one of the type I have to manually unwrap to a string, and then use like where user_uuid = $userUuidString::uuid.

It's a pretty popular ID type nowadays in db design.

[deusaquilus]

Good idea. I'll try to add it in the next terpal version.