rpc server with HTTP/WS on the same socket (#12663)

* jsonrpsee v0.16

add backwards compatibility

run old http server on http only

* cargo fmt

* update jsonrpsee 0.16.1

* less verbose cors log

* fix nit in log: WS -> HTTP

* revert needless changes in Cargo.lock

* remove unused features in tower

* fix nits; add client-core feature

* jsonrpsee v0.16.2

substrate/client/finality-grandpa/rpc/src/lib.rs

@@ -138,7 +138,7 @@ mod tests {
 	use std::{collections::HashSet, convert::TryInto, sync::Arc};
 
 	use jsonrpsee::{
-		types::{EmptyParams, SubscriptionId},
+		types::{EmptyServerParams as EmptyParams, SubscriptionId},
 		RpcModule,
 	};
 	use parity_scale_codec::{Decode, Encode};