This features adds rfc7807 Problem detail responses when an error happens processing a request.
This will greatly improve the common issues with "blank pages" and "404 pages" issues which should now properly tell the user what input was wrong (group that does not exist, container name that does not exist, etc.)
* feat(plugin): add `proxywasm` plugin
The `proxywasm` plugin is a WASM Filter following the ProxyWasm ABI Specification using the proxywasm go sdk
This allows extensibility with any reverse proxy who implements the ProxyWasm ABI Specification.
The current WASM Filter was successfully tested with APISIX, Envoy, Nginx with ngx_wasm_module from Kong and Istio.
Fixes#145