Section ordering in MetaLib contributions

[rlaemmel]

cc @sschauss

The order in the models should be just that the given order eases understanding and is convenient for sequential rennarration.

As a guideline, I suggest

• Showing first "object" perspective for concrete or abstract syntax (when concrete syntax is not available). This means that the turnstile sample is shown first.
• Next a grammar, metamodel, or interface should be shown.
• When "capture" is used for artifacts that are suppressed, then the "capture" should be shown before the suppression.

Are we confident enough in these general rules?
If so, they could be enforced by the rendering engine.
I don't think so - so let's play with them for now by actually adjusting the models.

Any other guidelines ideas are welcome.

[le-cram]

We still need to put guidelines and a defined contribution somewhere.

Maybe, we could make use of this Repo's Wiki?
https://github.com/softlang/metalib/wiki