Initial support for vacuums (clean module) (#944)

Adds support for clean module:
- Show current vacuum state
- Start cleaning (all rooms)
- Return to dock
- Pausing & unpausing
- Controlling the fan speed

---------

Co-authored-by: Steven B <51370195+sdb9696@users.noreply.github.com>

kasa/discover.py

@@ -676,9 +676,14 @@ class Discover:
         for key, val in candidates.items():
             try:
                 prot, config = val
+                _LOGGER.debug("Trying to connect with %s", prot.__class__.__name__)
                 dev = await _connect(config, prot)
-            except Exception:
-                _LOGGER.debug("Unable to connect with %s", prot)
+            except Exception as ex:
+                _LOGGER.debug(
+                    "Unable to connect with %s: %s",
+                    prot.__class__.__name__,
+                    ex,
+                )
                 if on_attempt:
                     ca = tuple.__new__(ConnectAttempt, key)
                     on_attempt(ca, False)
@@ -686,6 +691,7 @@ class Discover:
                 if on_attempt:
                     ca = tuple.__new__(ConnectAttempt, key)
                     on_attempt(ca, True)
+                _LOGGER.debug("Found working protocol %s", prot.__class__.__name__)
                 return dev
             finally:
                 await prot.close()