Feature request: support "on" for bools.

[MaratBR]

Checkbox inputs when form is submitted send "on" string to the server rather than "true". Supporting that could simplify forking with checkboxes in HTML forms. Right now I have to use string and compare it with "on" which is not what I want to do ideally.

[ggicci]

Hey @MaratBR , you could register a custom codec to override the default behavior of how httpin parses bool values globally. See https://pkg.go.dev/github.com/ggicci/httpin@v0.20.0/core#RegisterCoder

[ggicci]

Tbh, the package is far more advanced and flexible than it's documented. I'm actually working on refactoring and completing the documents recently, as well as introducing a few new features. Thanks for using this package :)