feat: Support for custom @format types

[denk0403]

See #144.

TL;DR: Added support for more built-in @format types, as well as the ability to define custom string validation formats via the config file's customJSDocFormats property:

{
  "customJSDocFormats": {
    "phone-number": "^\\d{3}-\\d{3}-\\d{4}$",
    "date": {
      "regex": "^\\d{4}-\\d{2}-\\d{2}$",
      "errorMessage": "Must be in YYYY-MM-DD format."
    }
  }
}

A nice side-effect of this implementation is that custom format types are actually able to override the output of built-ins. For example, one can override the "email" format type like so:

// ts-to-zod.config.js
{ 
  // ...
  customJSDocFormats: {
    email: "^[A-Za-z]+@my_domain.com$",
  }
}

Then as a result, the generated Zod schema for properties with @format email will look like:

{
  /**
   * @format email
   */
  email: z.string().regex(/^[A-Za-z]+@my_domain.com$/)
}

What's left:

• Built-in support for format types date-time, ip, ipv4, & ipv6.
• Support for defining custom format types via the config file.
• Updating the README with documentation for the new features.
• A little cleanup and better code coverage.

[fabien0102]

Very cool, I can't wait to see this PR merge! Good job 👌

[codecov-commenter]

Codecov Report

Merging #145 (89a56e3) into main (ac24784) will decrease coverage by 0.01%.
The diff coverage is 96.07%.

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@@            Coverage Diff             @@
##             main     #145      +/-   ##
==========================================
- Coverage   97.32%   97.32%   -0.01%     
==========================================
  Files          14       14              
  Lines         674      711      +37     
  Branches      273      283      +10     
==========================================
+ Hits          656      692      +36     
- Misses         18       19       +1     

Files	Coverage Δ
src/core/generate.ts	96.15% <100.00%> (+0.03%)	⬆️
src/core/generateZodSchema.ts	96.16% <ø> (ø)
src/core/jsDocTags.ts	98.50% <96.00%> (-0.48%)	⬇️

[fabien0102]

Amazing job!!! Thanks for this cool addition! I did modify the code style to fit the rest of the codebase.

This will be part of the next release! (and sorry for the very late review, I'm a totally out of my side-projects thoses days)