Create maker commands to generate data providers and data persisters

[dunglas]

Description

It could be nice to add two commands to MakerBundle (or to ApiPlatformBundle): make:data-provider and make:data-persister.

This would help users bringing their own persistence layer.

[GregoireHebert]

Good idea, it could even be extended to DataTransformer, ItemQueryExtension, CollectionQueryExtension and custom filter extending AbstractContextAwareFilter .

[chalasr]

(or to ApiPlatformBundle)

As discussed, extending maker-bundle in api-platform makes much more sense than the opposite to me.

[dunglas]

We shouldn't encourage using DataTransformer (data transformers are very often misused). +1 for the other classes.

[LebzoDev]

Instead of creating a persister file and customing it, it would be better to have one command to generate it