Generic Exception raised on HLS authentication failure instead of GXDLMSException

GXDLMSClient.py:

Current code:
if not equals:
    raise Exception(
        "parseApplicationAssociationResponse failed. "
        + " Server to Client do not match."
    )

Should be:
# In GXDLMSClient.py imports:
from .GXDLMSException import GXDLMSException
from .enums import AssociationResult  # (add to existing 'from .enums import ...')

# In parseApplicationAssociationResponse():
if not equals:
    raise GXDLMSException(
        AssociationResult.PERMANENT_REJECTED,
        SourceDiagnostic.AUTHENTICATION_FAILURE,
    )

Reason:

When HLS authentication fails, parseApplicationAssociationResponse() raises a raw Python Exception instead of a typed GXDLMSException.

This causes several issues:

1. Dead code in GXDLMSReader.initializeConnection():
In GXDLMSReader.py, HLS authentication is wrapped in:
try:
    for it in self.client.getApplicationAssociationRequest():
        self.readDLMSPacket(it, reply)
    self.client.parseApplicationAssociationResponse(reply.data)
except GXDLMSException as ex:
    #Invalid password.
    raise GXDLMSException(AssociationResult.PERMANENT_REJECTED, SourceDiagnostic.AUTHENTICATION_FAILURE)

Because parseApplicationAssociationResponse() raises a base Exception (which does not inherit from GXDLMSException), the except GXDLMSException handler is never reached.

2. Inconsistency between LLS and HLS:
For LLS, authentication failure in parseAareResponse() raises GXDLMSException with:
AssociationResult.PERMANENT_REJECTED
SourceDiagnostic.AUTHENTICATION_FAILURE

HLS authentication failure should produce the same typed exception with the corresponding association error and diagnostic values.

3. Broken error handling for client applications:
Callers cannot inspect structured error attributes (result, diagnostic, errorCode) and are forced to catch generic Exception and parse the error string.