move AAPI from middleware

[cstockloew]

Move AAPI from middleware to this repo; adapt bundle/package names.

[cstockloew]

Just a quick vote: do we want to keep the AAPI?

There are some drawbacks with the approach, e.g. that not everything is possible yet (it's just not everything implemented to be available as annotation). Also, some levels of AAPI only work locally, but not distributed. And it's a completely different approach that may be problematic if a beginner starts with this one and then has to learn the 'traditional' way (twice the learning)..

[amedranogil]

I would say keep it, we don't have the resource to fully integrate it, but I think in the future this feaute will be very useful for quick integration (when properly implemented).

[Alfiva]

I personally usually don't like annotations. Maybe we can keep it but not advertise it...