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