Adds support and test for ReadonlyArray

[dpeek]

Currently a type with a ReadonlyArray field results in a circular dependency error.

type Superman = {
   weaknesses: ReadonlyArray<string>;
}

This PR adds support for ReadonlyArray by treating is as a normal zod array type, and adds a test to verify it works.

While testing I had to upgrade ts-node as I was getting this error:
https://stackoverflow.com/questions/72488958/false-expression-non-string-value-passed-to-ts-resolvetypereferencedirective

Happy to revert that bit if you don't want to upgrade that dependency :)

[codecov-commenter]

Codecov Report

Merging #88 (ef0341c) into main (e5e4961) will decrease coverage by 1.33%.
The diff coverage is 96.27%.

@@            Coverage Diff             @@
##             main      #88      +/-   ##
==========================================
- Coverage   98.49%   97.15%   -1.34%     
==========================================
  Files           8       12       +4     
  Lines         332      457     +125     
  Branches      102      159      +57     
==========================================
+ Hits          327      444     +117     
- Misses          5       11       +6     
- Partials        0        2       +2     

Impacted Files	Coverage Δ
src/core/generateZodSchema.ts	95.07% <92.30%> (-2.13%)	⬇️
src/utils/resolveModules.ts	97.67% <97.67%> (ø)
src/core/generate.ts	100.00% <100.00%> (ø)
src/core/jsDocTags.ts	98.57% <100.00%> (-1.43%)	⬇️
src/core/validateGeneratedTypes.ts	97.05% <100.00%> (-0.31%)	⬇️
src/utils/getSimplifiedJsDocTags.ts	100.00% <100.00%> (ø)
src/utils/isNotNull.ts	100.00% <100.00%> (ø)
src/utils/resolveDefaultProperties.ts	100.00% <100.00%> (ø)
... and 6 more

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[fabien0102]

Looks good to me, thanks for the contribution 💯