chore: add support for verbose flag to the migration tool to view successful migrations

[annabkr]

What kind of change does this PR introduce?

Chore

What is the current behavior?

When running make migrate_test, a successful migration produces no output.

This is because migrate installed a no-op logger at any non-debug level. This make command inherited the test.env file which defaults to WARN level. DEBUG was too noisy because it prints every SQL statement and two full migration status tables.

What is the new behavior?

When running make migrate_test, the name of each applied migration is output:

> add_my_table
> add_my_other_table
Successfully applied 2 migrations.

If there are no migrations to run, when the --verbose flag is provided we now see:

Migrations already up to date, nothing to apply
0.0245 seconds

Added:

• A --verbose flag on the migrate command, which prints progress messages to stdout. It does not print SQL or JSON (that was tried, but human readability was an issue due to the JSON formatter mangling output).
• The migrate_test Make target passes in --verbose, and our helper script forwards it to the migrate command.

Additional context

AUTH-1574