RJiter - Streaming JSON Parser for Rust

RJiter is a streaming JSON parser that processes large JSON files using a small buffer. It wraps the `Jiter` library and adds streaming capabilities by automatically reading more data when needed. RJiter is `no_std` compatible and uses `embedded-io` traits.

For more details, see `llms-readme.txt`.
For Jiter documentation, see `jiter/llms.txt`.