Generate models from shapes

The idea is that the user should be able to provide a shex files and have the django models generated automatically.

We should also document limitations of this concept. Related questions to investigate considering we are doing things in Django/SQL:

• Investigate if we can do that in SQL ?
• Runtime or compile time ?
• Migrations support ?
• NoSQL / Triplestore ? FileSystem ?
• Stop using Django-Rest-Framework ?

https://ruben.verborgh.org/blog/2019/06/17/shaping-linked-data-apps/

@jblemee : how much for a PoC ?