api/pupdevices/Remote: add address

After connecting (automatically), this address can be printed so next time you can connect directly without scanning.

This is useful if you have more than one remote.

doc/api/pupdevices/remote.rst

@@ -13,6 +13,9 @@ Remote Control
 .. autoclass:: pybricks.pupdevices.Remote
   :no-members:
 
+  .. autoattribute:: pybricks.pupdevices::Remote.address
+       :annotation:
+
   .. automethod:: pybricks.pupdevices::Remote.light.on
 
   .. automethod:: pybricks.pupdevices::Remote.light.off

pybricks/pupdevices.py

@@ -31,7 +31,7 @@ class Remote:
     light = _ColorLight()
     buttons = _Keypad()
     address = None
-    """Bluetooth address of the remote."""
+    """Bluetooth address of the remote, or ``None`` if it is not connected."""
 
     def __init__(self, address=None, timeout=10000):
         """Connects to the remote.