Use this callback to communicate with framework wifi api.
Will get candidates wifi ap list and related callback to select which wifi ap wanted to use, and related operated result status.
Bug: 117399926
Test: RunSettingsRoboTests
Change-Id: Ic8ee678c06f21050761ebb58dc0fe50bc5732e53
For NetworkRequestTimeoutDialogFragment, the dialog show after WiFi
scanning timeout or get no WiFi ap to list. Dialog will ask if user
want to continue scanning or cancel.
Bug: 117399926
Test: RunSettingsRoboTests
Change-Id: I0551a753c10265e69a7830833813852a95eab5ef