Provide compatibility with Feign #40
Description
Feignx replaces a number of core Feign interfaces. This non-backward compatible breaking change will hinder adoption for those that have built their own extensions. However, most of the breaking changes are in name only, not concept:
- Encoder => RequestEncoder
- Decoder => ResponseDecoder
- ErrorDecoder => ErrorHandler
This should allow us to create a compatibility library that bridges the Feign components with the new Feignx components, allowing the library of existing extensions to take advantages of Feignx's improvements.