Description: Currently the priority of the BLE is hard coded to 5. Allow flexibility to change the priority level of this thread while keeping the BLE thread as the highest priority thread in the system.

The preferred way should be to use a configuration that automatically choose the highest priority of the OS used (and not hardcoded). The highest priority is set within the FreeRTOS SysConfig module labeled as Maximum Task Priorities. The BLE thread priority is assigned to the highest configured priority.