Add support for draft 4

[OptimumCode]

Resolves #139

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 15 lines in your changes missing coverage. Please review.

Project coverage is 90.59%. Comparing base (68756be) to head (5b32acc).

Files	Patch %	Lines
.../factories/number/Draft4MaximumAssertionFactory.kt	66.66%	0 Missing and 7 partials ⚠️
.../factories/number/Draft4MinimumAssertionFactory.kt	66.66%	0 Missing and 7 partials ⚠️
...schema/internal/config/Draft4SchemaLoaderConfig.kt	97.91%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #140      +/-   ##
==========================================
- Coverage   90.75%   90.59%   -0.17%     
==========================================
  Files         126      130       +4     
  Lines        3743     3847     +104     
  Branches     1027     1055      +28     
==========================================
+ Hits         3397     3485      +88     
- Misses         65       66       +1     
- Partials      281      296      +15     

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