feat: pointer query params

[ImFlog]

Hello,

I started using this awesome project and was a bit annoyed by the need to declare additional structs instead of using pointer. I had a use case were a query parameters not passed has a different semantic than being false.

So I gave a Go at the issue. I am not an expert in reflection and thus was helped by AI doing the code.

The idea is to check if the reflection type is a pointer and if so, use the pointed object and store the fact that it's a pointer to be used later on.

It should fix #393.

[codecov]

Codecov Report

❌ Patch coverage is 97.36842% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 93.23%. Comparing base (ad801e0) to head (16471cf).

Files with missing lines	Patch %	Lines
huma.go	97.36%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1110      +/-   ##
==========================================
+ Coverage   93.20%   93.23%   +0.03%     
==========================================
  Files          23       23              
  Lines        4988     5011      +23     
==========================================
+ Hits         4649     4672      +23     
  Misses        272      272              
  Partials       67       67              

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