POC : Identify Gaps between gRPC and HTTP services in GoFr

Currently we have support for gRPC and a well extensive support for HTTP Services. We need to identify the gaps between both and close them. Since we want to enable accelerated microservice development in our microservices, our set of features for both the features must be extensive and complete for production ready systems.

Start by comparing GoFr's existing gRPC and HTTP service support to identify concrete feature gaps. Define the production-ready parity requirements before making changes; done means the gaps are documented and the agreed missing capabilities are implemented.

Written by the indexing model from the issue text.