String one of

[aminnairi]

Is your feature request related to a problem? Please describe.
It would be great to be able to check if a string is included in a set of values, and prevent other values from being used.

Describe the solution you'd like
Create a rule that will check if all values are in the set of authorized values.

import * as Kryptonian from "kryptonian";

Kryptonian.Kalel.string({
  message: "It should be a stirng",
  rules: [
    Kryptonian.Kalel.String.oneOf({
      message: "It should be one of the following values: Haskell, Elm or Roc",
      values: ["Haskell", "Elm", "Roc"]
    })
  ]
});

// Omiting the message
Kryptonian.Kalel.string({
  message: "It should be a stirng",
  rules: [
    Kryptonian.Kalel.String.oneOf({
      values: ["Haskell", "Elm", "Roc"]
    })
  ]
});

Describe alternatives you've considered
None.

Additional context
None.