Added class Adapter in iwd.py

Initial implementation. No useful public methods yet

naxalnet/iwd.py

@@ -197,4 +197,17 @@ class Device:
         self._proxy.StartOpen(name)
 
 
-# TODO: make a class Adapter with power_on() and power_off()
+# TODO: add power_on() and power_off()
+class Adapter:
+    """represents an adapter as a python object"""
+
+    def __init__(self, name: str, bus=SystemMessageBus()):
+        self._iwd = IWD(bus)
+        self._bus = self._iwd._bus
+        self._path = self._iwd.get_adapter_path_from_name(name)
+        # Initialise self._proxy
+        self.reload()
+
+    def reload(self):
+        """reload the proxy after changing mode"""
+        self._proxy = self._bus.get_proxy(IWD_BUS, self._path)