Metadata schema configuration and new logic

[nitrosx]

This PR introduces the new metadata schema configuration and the code to select the applicable one and to define the configured values

[YooSunYoung]

I think what you trying to do is clear enough in the code. Maybe just some wrapping needed, like extracting parts of code to a function and etc.
Are you going to finish it so that it passes all the checks as well or do you want me to take it over...? @nitrosx