Clarification: How to store OSI messages in a file

There is an issue in the OSI visualizer and I sometimes receive these questions regarding "how to store the messages in a file" Link to existing issue.
We could consider providing a "best practice" for this in the readme?

Possible best practice

@mbencik what do you think?

Should we reference this solution in the documantion and use it for the "osi visualizer"?

[mbencik]

We can reference this as a possible solution in the documentation. But I would advise against it, to integrate into OSI visualizer. It should stay purely a playback tool. One thing would be to write a very basic and primitive recording tool and to publish it, then everybody can modify it to his wishes.

[mbencik]

OSI is stored serialized, meaning that the messages do not have a beginning and a ending that is arbitrary. No type or version definition is visible from outside unless we define it, again arbitrary. So the recording procedure is a arbitrary process regarding message delimiters and typification.

[vkresch]

Resolved #358