To improve developer experience, require just one collection of extractors that filters by the interfaces that have been implemented on each extractor.

• Simplifies registering new extractors in the service container.
• Reduces duplication of semantics (intent defined by interfaces implemented, instead of interfaces implementedand service container tag).
• PreventsCall to undefined method fatal errors for extractors defined with the wrong service container tag.

However, thisdoes break backwards-compatibility for:

• Manual instantiation of thePropertyInfoExtractor.
• Classes that extendPropertyInfoExtractor.
• Services tagged with any of theproperty_info.*_extractor tags.

I'm suggesting this change purely in the unlikely event that the PropertyInfo component can be classed as internal, since documentation is still pending.

/cc@dunglas