hotplug wmme: Factor out new Query{Input, Output} DeviceInterfaceName() functions...

hotplug wmme: Factor out new Query{Input, Output} DeviceInterfaceName() functions to wrap DRV_QUERYDEVICEINTERFACE. Store the device interface name in PaWinMmeDeviceInfo::deviceInterfaceName, free the associated allocation in FreeDeviceInfos() (required adding deviceCount parameter). Rework WDM/KS-based numChannels query to use the stored deviceInterfaceName. Free name memory on error in InitializeInputDeviceInfo, InitializeOutputDeviceInfo. Implement device connectionId correlation by matching deviceInterfaceName using new functions: FindDeviceByConnectionId(), FindDeviceInfoByInterfaceName(), AssignDeviceConnectionId().