Add option to test API connection in Patchs

With the introduction of Appointment Reminders and Appointment Self-booking, the setup for the EMIS API for Patchs is becoming more common but we are often unable to confirm if the API is working successfully, even if the set-up steps have been followed.

By adding an option to perform a series of calls to the EMIS API, it would enable both users and support to determine if there are any issues with the API configuration when the service desk is contacted. This would remove the need for Support to escalate cases to Patchs Health to determine if the API is causing the issue or if there is something else impacting functionality