URN (RFC 8141) validator

[leodido]

• I have looked at the documentation here first?
• I have looked at the examples provided that may showcase my question here?

Package version eg. v9, v10:

v10

Issue, Question or Enhancement:

Enable validation of a string value as a URN according to RFC 8141 spec (2017).

Code sample, to showcase or reproduce:

type Config struct {
    path string `validate:"urn"`
}