move squeezelite/box player detection/setup to core/router reload
Currently it can take 2-3 router reloads/reboots of an MD to get a squeezelite device configured on the core. SqueezeBox Player detection of squeezelites/setup should move to the core so all devices can be configured at one time during a reload/before loading. This would enable setting up squeezeboxes as the default audio players and would ensure configuration prior to availability of the UI interface.