Ripley performance improvements

[eugenepaniot]

1. Transitioned to using https://github.com/valyala/fasthttp/ for the HTTP client;
2. Transitioned to using github.com/valyala/fastjson/ for fast json parsing;
3. Add custom Connection Diler to count TCP metrics (connections, bytes);
4. Add metrics server;
5. Add other metrics;
6. Add handleResult listener rather create goroutine;
7. Buffered channels;
8. Rewrite dummyweb server on fasthttp with reuseport;
9. Add store and print N results with the longest latency;
10. Improve error log reporting (connection errors, http errors 5xx);
11. Other UX improvements.

[eugenepaniot]

@eugenepaniot I haven't been able to finish the review. Sharing my comments so far. I currently can't run the tests because:

# command-line-arguments [command-line-arguments.test]
pkg/replay.go:136:16: undefined: unsafe.String
pkg/replay.go:136:30: undefined: unsafe.SliceData

The golang 1.20 is required as these function introduced in 1.20 version.

[sonarqubecloud[bot]]

Quality Gate failed

Failed conditions

2 Security Hotspots

See analysis details on SonarCloud