ENH: Add fmu.realization.is_reference to schema

[tnatt]

closes #826

[perolavsvendsen]

See comment. If this populates the fmu.realization.is_reference in all data objects produced (of any class), and defaults it to False, this will probably create problems down the line - or we would have to iterate through all data objects in a realization and change all of them upon flagging a realization as "reference".

[jcrivenaes]

I have still issues with the wording here. Tried to have a discussion under the issue here: https://github.com/equinor/sumo/issues/153.

Key message: propose an off-line discussion @perolavsvendsen, @tnatt

[tnatt]

I have still issues with the wording here. Tried to have a discussion under the issue here: equinor/sumo#153.

Key message: propose an off-line discussion @perolavsvendsen, @tnatt

Yes lets do it! I am e.g. available after lunch today 🙂

[mferrera]

Based on our discussion last week I believe this is good to go

I think this has been resolved now, but happy to be corrected if not (blocks being merged)