Body Proxy

Proxy-Wasm plugin that pulls out a specific property from the body of the request and sets it as a header.

So far, using information and some content from the following repos and respecting the license(s):

• https://github.com/layer5io/wasm-filters/
• https://github.com/proxy-wasm/proxy-wasm-rust-sdk/tree/main/examples/http_headers