benches: add option to run benchmarks against jsonrpc crate servers (#527)

* fix http client bench with request limit

* benches for jsonrpc servers

* workaround; dont use max request limit

* add subscriptions

* revert unintentional change

* ignore batch request bench for ws

* fmt

* log -> tracing

* test bench CI

* test bench v0.3

* wtf; run CI

* work plz

* remove test CI bench

* fix compile warn on macos