List Gitaly calls and arguments in the performance bar
For SQL queries, we have a handy list in the performance bar, that lets us see things like this:
Yes, we get user ID 443319 twice, in different ways.
For Gitaly, it would be useful if:
- We could see details of the calls and (if possible) arguments.
- We could see this at the migration site, so even if the feature flag for this RPC is not enabled, we'd still see that we could have called Gitaly.