Replace dependency on `jiter` with another JSON parser or add a fallback

[barracuda156]

jiter requires Rust. Is it possible to use a pure Python parser, or C-based one, instead of it?

[RobertCraigie]

Likely not feasible unfortunately, why are you asking? What issues is this causing for you?

[barracuda156]

Likely not feasible unfortunately, why are you asking? What issues is this causing for you?

Rust is broken on some non-mainstream platforms, and problematic to bootstrap from source otherwise.