Support GTIN-14 / EAN-UCC

currently only EANs with length of 8 or 13 are supported, but for some cases you also need different lengths like 14.
E.g. http://www.ibcaweb.org/guide/guide_mfr/ch4.htm#4.4%20EAN/UCC-14%20and%20Intermediate%20Packs

We need to update our README.md file before the 1.0 release.

• [ Y] Are you running the latest version?
• [ Y] Have you included sample input, output, error, and expected output?
• [ Y] Have you checked if you are using correct configuration?
• [ N] Did you try online tool?

Description

When a json includes a number, and running the code example appearing in fast-xml-parser site, causes

• First of all thank you for the fantastic work on this library
• As per THIS discussion, it seems email seems to have an upper limit of 320
• But currently min and max properties dont work with email
• Would it be possible to do something about this
  `
  var s = {email: {type: 'email', min: 3, max:

• Guidance on adding a linter new rule-action (if none of the existing ones can perform the action, or be extended)
• Expand on guidelines re: keeping commits to logical areas of the code / individual packages where possible
• Use of conventional-commit standard going forward
• Advice not to include any package-lock.json changes PRs, for security reasons. File will be regene