benchmark: add benchmark on async_hooks enabled http server

[legendecas]

Refs: nodejs/diagnostics#124

FWIW following is the result of the benchmark:

async_hooks/http-server.js connections=50 asyncHooks="init" benchmarker="autocannon": 31,934.4
async_hooks/http-server.js connections=500 asyncHooks="init" benchmarker="autocannon": 31,830.4
async_hooks/http-server.js connections=50 asyncHooks="before" benchmarker="autocannon": 33,041.6
async_hooks/http-server.js connections=500 asyncHooks="before" benchmarker="autocannon": 30,643.2
async_hooks/http-server.js connections=50 asyncHooks="after" benchmarker="autocannon": 32,300.8
async_hooks/http-server.js connections=500 asyncHooks="after" benchmarker="autocannon": 29,969.6
async_hooks/http-server.js connections=50 asyncHooks="all" benchmarker="autocannon": 33,208
async_hooks/http-server.js connections=500 asyncHooks="all" benchmarker="autocannon": 32,388.8
async_hooks/http-server.js connections=50 asyncHooks="disabled" benchmarker="autocannon": 34,539.2
async_hooks/http-server.js connections=500 asyncHooks="disabled" benchmarker="autocannon": 32,571.2
async_hooks/http-server.js connections=50 asyncHooks="none" benchmarker="autocannon": 34,468.81
async_hooks/http-server.js connections=500 asyncHooks="none" benchmarker="autocannon": 31,824

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• commit message follows commit guidelines

[Trott]

This breaks test/benchmark/test-benchmark-async-hooks.js (which isn't run on every pull request but is run on nightly runs). You'll want to add the asyncHooks and c settings to that test. (Or add asyncHooks only and rename c to n in this benchmark.)

Feel free to dismiss this "request changes" review once the test is updated and passing.

[legendecas]

Just updated the ordering according to @Trott 's suggestion.

[BridgeAR]

Landed in bf7265f 🎉