cli: standalone cockroach-sql does not know how to use env vars #82024
Description
Describe the problem
cockroach sql supports COCKROACH_DATABASE and other client-side env vars to set connection defaults.
The standalone cockroach-sql shell does not see these env vars and so the env vars cannot be used to override the connection parameters.
Expected behavior
The env vars should be supported for convenience and feature parity with cockroach sql.
Jira issue: CRDB-16172