rpc: expose http::Builder, websocket::Builder under client (inf…

…ormalsystems#1378)

Re-export client::transport::{http, websocket} (guarded by appropriate
feature gates) publicly under the client module.
This exposes the Builder types defined in each of the modules
as public API, with properly built documentation.

.changelog/unreleased/improvements/1378-expose-rpc-client-builders.md

@@ -0,0 +1,3 @@
+- `[tendermint-rpc]` Export the `http`, `websocket`
+  modules under `client`, each with the public `Builder` type
+  ([\#1378](https://github.com/informalsystems/tendermint-rs/pull/1378)).

rpc/src/client.rs

@@ -15,10 +15,10 @@ pub mod sync;
 mod transport;
 
 #[cfg(feature = "http-client")]
-pub use transport::http::{HttpClient, HttpClientUrl};
+pub use transport::http::{self, HttpClient, HttpClientUrl};
 #[cfg(feature = "websocket-client")]
 pub use transport::websocket::{
-    WebSocketClient, WebSocketClientDriver, WebSocketClientUrl, WebSocketConfig,
+    self, WebSocketClient, WebSocketClientDriver, WebSocketClientUrl, WebSocketConfig,
 };
 
 #[cfg(any(feature = "http-client", feature = "websocket-client"))]