Add possibility to export and import column definitions via attribute option batch job

[fdyckhoff]

It is currently not possible to export the column definitions of a table attribute via CSV or import them.

I would like to export and import all required configurations for this attribute or use fixtures for our own dataset.

Tested with Akeneo 3.2 EE

[flagbird]

Hi @fdyckhoff. Thank you for your contribution to the TableAttributeBundle. Before we start to review your additions and changes:

• Please add unit tests / specs for the new classes
• For the easier integration of new services, please add an integration test for the tagged AttributeOptionNormalizer that shows the service is chosen by Akeneo instead the original one.
• For the easier integration of new services, please also create integration tests for the decorated services, that should return instances of your newly created classes when the Akeneo service names are used.