feat(s2n-quic-core): add aggregate metrics support #4986

Job	Run time
env	5s
s2n-quic-qns (debug)	2m 29s
s2n-quic-qns (release)	6m 40s
bench	17m 52s
h3spec (s2n-tls)	13s
h3spec (rustls)	13s
attack (udp)	5m 34s
interop (aioquic, s2n-quic)	16m 20s
perf (s2n-quic, s2n-quic)	1m 22s
interop (chrome, s2n-quic)	5m 37s
perf (s2n-quic-null, s2n-quic-null)	58s
interop (go-x-net, s2n-quic)	11m 52s
interop (kwik, s2n-quic)	14m 23s
interop (lsquic, s2n-quic)	13m 13s
interop (msquic, s2n-quic)	16m 8s
interop (mvfst, s2n-quic)	11m 43s
interop (neqo, s2n-quic)	15m 59s
interop (ngtcp2, s2n-quic)	14m 30s
interop (picoquic, s2n-quic)	15m 22s
interop (quic-go, s2n-quic)	12m 22s
interop (quiche, s2n-quic)	18m 36s
interop (quinn, s2n-quic)	14m 45s
interop (s2n-quic, aioquic)	13m 35s
interop (s2n-quic, go-x-net)	11m 14s
interop (s2n-quic, haproxy)	15m 32s
interop (s2n-quic, kwik)	12m 20s
interop (s2n-quic, lsquic)	11m 24s
interop (s2n-quic, msquic)	12m 50s
interop (s2n-quic, mvfst)	15m 23s
interop (s2n-quic, neqo)	13m 11s
interop (s2n-quic, nginx)	10m 29s
interop (s2n-quic, ngtcp2)	12m 55s
interop (s2n-quic, picoquic)	11m 47s
interop (s2n-quic, quic-go)	10m 29s
interop (s2n-quic, quiche)	11m 47s
interop (s2n-quic, quinn)	12m 19s
interop (s2n-quic, s2n-quic)	12m 59s
interop (s2n-quic, s2n-quic-rustls)	12m 26s
interop (s2n-quic, xquic)	5m 24s
interop (s2n-quic-rustls, s2n-quic)	13m 4s
interop (xquic, s2n-quic)	9m 25s
perf-report	10s
interop-report	15s
	7h 25m 14s

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