Add a log entry when an exception is added to the RuntimeService

[romm]

Currently, the only way of viewing an exception thrown by the system is located in the backend module. However, an exception can be thrown only in the frontend context, meaning the exception would not be thrown in the backend contact. Therefore it can't be viewed and analyzed, making the debugging way harder.

Some kind of logging should be introduced in the RuntimeService which is in charge of gathering the exceptions catch during the runtime.