refactor(protocol-config): make a single file module for http_client

Author: turmelclem

internal/mithril-protocol-config/src/http_client/mod.rs

@@ -2,7 +2,10 @@
 //! This crate provides functionality for interacting with Mithril Network
 
 mod aggregator_client;
-pub mod http_client;
+/// HTTP client Implementation for interacting with Mithril Network.
+pub mod http_client {
+    pub mod http_impl;
+}
 pub mod interface;
 pub mod model;
 pub mod test;