How should nullable query params be handled without pointers?

Hey! Excellent project, I've been reworking various projects to make use of Huma and have loved it (despite the initial learning curve).

We use a filter struct that gets passed through various layers, and use pointers for each field to support nullable and empty values. [Unfortunately, Huma doesn't support pointers for query params.](https://github.com/danielgtaylor/huma/blob/e66ddf3644c99f8363d6ad61e9b0c58d24f5c16e/huma.go#L120) I thought I could just switch to checking if a value was empty, but then ran into the issue of booleans. How should this be approached without a hacky workaround? I did read the `TODO` in the codebase as to why pointers aren't _currently_ supported :(

Thanks in advance!

The issue points to huma.go around line 120 and the existing TODO; read that code and the linked discussion first. Define an agreed approach for representing nullable query parameters, especially booleans, and confirm the behavior with maintainers before implementation. Done means the supported behavior and approach are accepted and documented or implemented.

Written by the indexing model from the issue text.