wlanapi: Implement several methods on top of NetworkManager.
This MR adds a unixlib component to wlanapi containing DBus + NetworkManager implementations for
- WlanEnumInterfaces
- WlanGetAvailableNetworkList
- WlanGetNetworkBssList
- WlanScan
- WlanSetProfile
- WlanConnect
- WlanGetProfileList
- WlanDisconnect
Edited by Vibhav Pant