Custom message support

[atomicrobokid]

Hi,

Any chance of getting custom message support (I know we can override the default message) - however some stylelint rules support message arguments:

An example from the stylelint docs:

  'color-no-hex': [true, {
    message: (hex) => `Don't use hex colors like "${hex}"`,
  }]

As the default message here is:
Unexpected custom property "something" inside declaration "background-color"

So in this case, it would look like
message: (property, decl) => The token "${property}" on property "${decl}" does not exist

Motivation for this is we would see linting errors if a user hasn't ran style dictionary build since they've added new tokens. That would enable us to give them a helpful prompt