Add discovery class

Author: CoMPaTech

airos/exceptions.py

@@ -23,3 +23,15 @@ class KeyDataMissingError(AirOSException):
 
 class DeviceConnectionError(AirOSException):
     """Raised when unable to connect."""
+
+
+class AirosDiscoveryError(AirOSException):
+    """Base exception for Airos discovery issues."""
+
+
+class AirosListenerError(AirosDiscoveryError):
+    """Raised when the Airos listener encounters an error."""
+
+
+class AirosEndpointError(AirosDiscoveryError):
+    """Raised when there's an issue with the network endpoint."""