Pass and read meta information about columns.

Right now the declared schema in the studio doesn't influence the things that will happen in the runtime for tck connectors.
As a user, I can define not nullable column but in the runtime the scheme but in the runtime those files are going to be nullable anyway.

Like on the screenshots from the https://jira.talendforge.org/browse/TUP-33208

We can reproduce the behavior with the attach in remote debug to this job.
It uses Neo4j connector
toReproduce_TUP_33208.zip
Like on the screen:

Expected that in the result when the user defines not nullable columns those columns will be not nullable in the runtime too.

Suggestion
We can generate some static information inside a row structure.
Annotations?
smth else?