✨ Clicking on a rule's code in the tooltip open the rule's documentationUrl in the browser

[ouvreboite]

Fixes #235

Allow to "click to know more" on a problem's rule code, using the rule/ruleset documentationUrl.

This allow the user to access a richer documentation and to not be restricted to just the error message/error code.

Checklist

• [x] Tests added / updated
• [ ] Docs added / updated (I'm not sure there are docs that need to be updated)

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

The error-code becomes clickable (in the Problems view but also in the tooltip).

The link is constructed following the rules defined here:

• if the rule has it's own documentationUrl, we use it
• otherwise we use the ruleset's documentationUrl (if it exists), with #the-rule-code appended
• the implementation also work for extended rulesets has we access each rule's "owner" (i.e. owning ruleset)

Additional context

🚨This feature requires Diagnostic.codeDescription, with is available in https://www.npmjs.com/package/vscode-languageserver-types > 3.16, which required upgrading some other vscode-languageserver and client dependencies.

I'm using a basic ruleset to test it locally, but I've not pushed it:

formats: ["oas3"]
documentationUrl: https://example.com
extends: spectral:oas
rules:
  with-direct-documentation: #should have the doc https://example.com/direct
    documentationUrl: https://example.com/direct
    severity: error
    given: $.tags[*]
    then:
      field: description
      function: falsy
  without-direct-documentation: #should have the doc https://example.com#without-direct-documentation
    severity: error
    given: $.tags[*]
    then:
      field: description
      function: truthy