Add connect-go, drpc benchmarks

[ysomad]

Hi! Just found the project researching benchmarks between the most popular frameworks like connect-go, twirp, drpc and grpc of course.

I think by adding benchmarks against these frameworks you will be able to attract more users taking into account the fact that frpc is positioned as a fast framework.

Didn't try frpc yet but sure I will! Thank you for you hard work!