Enable postgres-based event logs on Sourcegraph.com
Created by: dadlerj
Fixes https://github.com/sourcegraph/sourcegraph/issues/8032
@unknwon FYI, this will add a significant load (pg insertions and # of API calls) on Sourcegraph.com. Note that I left the browser extension events unlogged, though (since we say we won't capture telemetry from it in our docs: https://docs.sourcegraph.com/integration/browser_extension#privacy
Is it safe to turn this on?