AddPeer adds the device to wireguard.

IsAuthed returns true if the device is authorised.

RefreshConfiguration updates acls on all users, and updates the inactivity timeout.

Update FW routes for specific user.

Remove a wireguard peer from xdp firewall and wg device.

Takes the device to replace and returns the address of said device.

SetAuthroized correctly sets the timestamps for a device with internal IP address as internalAddress.