Adding more exceptions

lodel/auth/exceptions.py

+from lodel import logger
+
+def AuthenticationError(Exception):
+    pass
+
+def AuthenticationFailure(Exception):
+    
+    def __init__(self, client):
+        msg = "%s : authentication failure" % client
+        logger.security(msg)
+        super().__init__(msg)
+

lodel/exceptions.py

 class LodelException(Exception):
     pass
 
-
 class LodelExceptions(LodelException):
     ##@brief Instanciate a new exceptions handling multiple exceptions
     # @param msg str : Exception message
                     expt_msg=str(expt)
             )
         return msg
+
+##@brief Designed to be a non catched exception.
+#
+#@note Designed to be raised in dramatic case
+class LodelFatalError(Exception):
+    pass