Write an optional request logging interceptor that spits out httpd-format access logs

[mmihic]

Lots of tools process apache httpd2 access logs, and it's handy for debugging. Would be useful to have an interceptor that emits this log file.

[jjestrel]

from @ryanhall07 :
I don’t think the default should be log everything truncated
something like log all errors (up to a rate limiter) and maybe a random sample of success requests (edited)
also it should be easy to quickly enable/disable these features in real time
if i’m actively debugging an issue
and “error” should really be anything not ideal, like an error code or a long request
eventually we’d probably want all those configs/overrides backed by feature flags

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something like default % sample success requests, and rate limit errors, then have overrides per endpoint

[mmihic]

/cc @jmuia