[OSPP] Mapper supports device automatic discovery

[wbc6080]

What would you like to be added/modified:
Support Mapper to automatically discover devices and manage the devices into the KubeEdge cluster
Why is this needed:
Currently, when Mapper manages edge devices, users need to implement and submit the device CRD file to the KubeEdge cluster. Mapper connects and manages the device according to the definition in the CRD file. However, in some cases, devices support automatic discovery, such as Onvif camera devices. This issue plans to provide a device discovery function for the edge device management plug-in Mapper, which will allow Mapper to automatically scan and discover devices and manage them to the KubeEdge cluster, simplifying the user operation process.