[Improvement] Re-think how inherited fields data is created

[lukmzig]

Currently the inherited fields data (is field inherited and inheritance origin) are calculated on the GET data request.
In order to possibly improve performance we could re-think this approach

Suggestion

Create a table and store data on save of the data object (maybe consider using GEE if possible) - object ID, field key, isInherited, originId
When getting data for the data object, query data forms table instead

[fashxp]

just not to forget then: if some parent changes, all the children data has to be updated too.