feat(rotor): Statsig destination

fix(mixpanel): don't send merge or alias event if enableAnonymousUser…

…Profiles not enabled

fix(rotor): support for consumer "group.protocol" parameter

fix(rotor): support for consumer "group.protocol" parameter

rotor: migrate to confluent kafka library (#1222)

* rotor: migrate to confluent kafka library

fix(rotor): fix webpack config

Merge branch 'newjitsu' into feat/newjitsu/new-kafka-lib

fix(rotor): support for multithreaded option

fix(rotor): support for multithreaded option

fix(core-functions): fix mongodb collection index for identity stitch…

…ing and profiles collection