Make a command to see a service's sms sender phone numbers

[terrazoon]

Description

As we continue to investigate the 'wrong sender phone number' issue, add a command so we can inspect the values in the service_sms_senders table in the database.

Security Considerations

• The numbers being retrieved are public numbers, as they are the ones that the messages come from.
• This command can only be run on machines by folks who have access to the information (or locally for development purposes, with test data), and/or in the environment in which the app itself runs.

[ccostino]

Thanks, @terrazoon! I see the parametrized query being used, thank you. 🙂

I added a couple of security considerations to the PR description; good to go!