Enabling annotate_query for Snowflake

We would like to annotate the queries for Snowflake (interested in user names/id/whatever particularly), as it is done for some databases.
However Snowflake’s query runner does not seem to contain any calls to annotate_query.
Was it done intentionally for some reason?
Otherwise, WDYT on adding this? Can I provide a PR to get it sooner? Any hints?

Best regards,