Improve options for letting users sniff messages

[ad3154]

Is your feature request related to a problem? Please describe. There are some applications where users might want to sniff messages that are between 2 CFs, neither of which is an internal CF. Right now we don't really allow this, but it might be useful for logging applications that want to use our CF abstractions and transport layer.

Describe the solution you'd like I think we should add some functions similar to add_any_control_function_parameter_group_number_callback that allow users to get all messages between 2 CFs either by NAME field, by CF itself, or all messages indiscriminately, filtered by PGN.

We should also consider modifications to our transport layer that could allow it to process messages between other CFs, so that transport layer payloads can also be sniffed.