perf: Add timing stats to the snuba client. (#8508)
perf: Add timing stats to the snuba client. (#8508)

Collect timing around the db calls we make to retrieve project issues
and other mappings, as well as the actual Snuba API query time from the
client perspective, and the time to post-process the data.
ifduyue/sentry,ifduyue/sentry,beeftornado/sentry,beeftornado/sentry,ifduyue/sentry,mvaled/sentry,beeftornado/sentry,mvaled/sentry,ifduyue/sentry,mvaled/sentry,mvaled/sentry,looker/sentry,looker/sentry,looker/sentry,mvaled/sentry,mvaled/sentry,looker/sentry,looker/sentry,ifduyue/sentry