Support error custom message

[thoriqadillah]

I'm using nestia ^3.2.1, and the current error message is a bit too verbose. I'm aware that you can't add error message because the possibilities is infinite as stated in #886

but, what if you introduce new tag instead for the custom error message such as

interface Foo {
  bar: string & tags.Message<"Bar is required">
}

or

interface Foo {
  bar: number & tags.Max<3, "Maximum number is 3">
}

so there is no need to check the possibilities. if the message is defined, always fallback to the custom one