feat: setup clustering

[Aviortheking]

Tests using k6 confirm that clustering is way better to handle more traffic on the server

http_req_duration goes from 6s to 438ms (when ~1000 connections are being done at the same time) allowing the server to handle from ~300req/s to ~1500req/s

Before

metric	avg	max	med	min	p90	p95	p99
http_req_blocked	11µs	59ms	2µs	1µs	4µs	6µs	174µs
http_req_connecting	7µs	59ms	0ms	0ms	0ms	0ms	126µs
http_req_duration	2s	9s	2s	2ms	3s	6s	6s
http_req_receiving	40µs	1ms	38µs	14µs	55µs	63µs	88µs
http_req_sending	12µs	716µs	11µs	3µs	18µs	23µs	36µs
http_req_tls_handshaking	0ms	0ms	0ms	0ms	0ms	0ms	0ms
http_req_waiting	2s	9s	2s	2ms	3s	6s	6s
iteration_duration	2s	9s	3s	503ms	4s	6s	6s

After

metric	avg	max	med	min	p90	p95	p99
http_req_blocked	7µs	113ms	2µs	920ns	4µs	5µs	15µs
http_req_connecting	3µs	113ms	0ms	0ms	0ms	0ms	0ms
http_req_duration	112ms	960ms	79ms	4ms	269ms	327ms	438ms
http_req_receiving	55µs	60ms	39µs	9µs	68µs	120µs	340µs
http_req_sending	14µs	24ms	10µs	3µs	17µs	22µs	81µs
http_req_tls_handshaking	0ms	0ms	0ms	0ms	0ms	0ms	0ms
http_req_waiting	112ms	960ms	79ms	4ms	269ms	327ms	438ms
iteration_duration	613ms	1s	581ms	505ms	770ms	828ms	939ms

k6 config

0s 0vu
1m 1000vu
2m 1000vu
3m 0vu