console: filter traces on executing user

On projects with high volume of traffic, it will be helpful to filter traces based on the user who executed it. Currently there is no way to distinguish the same. There is no easy way to find traces for queries I just executed on the traces view page for debugging (https://console.hasura.io/project//build//insights/traces).

Start at the traces view page linked in the issue and trace how trace results are presented and filtered. Define the user-filter behavior and verify that traces can be narrowed to the executing user on high-volume projects; the issue names no files or tests, so repository exploration is required.

Written by the indexing model from the issue text.