[ENHANCEMENT]: support `enums`

[Zer0xxxx]

Feature Description

Currently, enums are not supported in Orange ORM. As we discussed, it could relatively "easily" be implemented.

Related to: https://github.com/alfateam/orange-orm/discussions/96 (https://github.com/alfateam/orange-orm/discussions/96#discussioncomment-9638139)

[Zer0xxxx]

Btw, I think it should be typed also. Just calling a validation function on it will help to keep the enum safe at runtime, but not at compile time. :/

Likewise:

const wolfgang = await db.team.insert({
  'lang': '...', // * ... No IntelliSense?
  // * ...
});

[lroal]

Yes, of course 😊