[Sofa.Core] Print the event when printLog is activated.

[damienmarchal]

It is often useful to be able to see what kind of events are received by a controller.

This PR add this behavior by printing the message name and parameters in the console when the 'printLog' data is checked.

[INFO]    [MyController(TOTO)] onUpdateMappingEndEvent {'type': 'UpdateMappingEndEvent', 'isHandled': False}
[INFO]    [MyController(TOTO)] onAnimateBeginEvent {'type': 'AnimateBeginEvent', 'isHandled': False, 'dt': 0.01}
[INFO]    [MyController(TOTO)] onAnimateEndEvent {'type': 'AnimateEndEvent', 'isHandled': False, 'dt': 0.01}
[INFO]    [MyController(TOTO)] onUpdateMappingEndEvent {'type': 'UpdateMappingEndEvent', 'isHandled': False}