consider adding P90, P95 and P99 quantiles to `go_gc_duration_seconds`

[Dentrax]

I will not cover that is exactly p90, p95, p99 quantiles means. Just wanted to drop this idea to discuss further here.

go_gc_duration_seconds{quantile="0"}
go_gc_duration_seconds{quantile="0.25"}
go_gc_duration_seconds{quantile="0.5"}
go_gc_duration_seconds{quantile="0.75"}
go_gc_duration_seconds{quantile="1"}

[stale[bot]]

Hello 👋 Looks like there was no activity on this issue for the last 3 months. Do you mind updating us on the status? Is this still reproducible or needed? If yes, just comment on this PR or push a commit. Thanks! 🤗 If there will be no activity in the next 4 weeks, this issue will be closed (we can always reopen an issue if we need!).