Proposal: Option to exclude JSONPaths for the rules definition

[pavelkornev]

User story.
As a user of Spectral it would be much flexible for me to have an opportunity to exclude certain paths from the given paths without overcomplicating JSONPaths or without defining a custom function for this purpose.

Describe the solution you'd like

In the following example the rule checks all description or title properties, but excluding examples objects because same-called properties are not part of the OpenAPI documents definition itself, but rather the example of the actual content payload which have their own constrains and requirements/guidelines:

'no-script-tags-in-markdown': {
  description: 'Markdown descriptions must not have "<script>" tags.',
  recommended: true,
  given: '$..[description,title]',
  exclude: '$..examples', // <--- easy way to exclude `title` and `description` inside these objects
  then: {
    function: pattern,
    functionOptions: {
      notMatch: '<script',
    },
  },
},