Expose Generic Inquiries in API

[erik-kle]

Expose a way to run generic inquiries as GET in the api. This would allow for a more dynamic way to get data than only fixed endpoints and allow the fetch data that is not available in the api

[Gert-Jan van der Kamp]

Yes this would allow the query to be defined and executed on the server. We'd prefer to do it this way, now it takes many different calls that need to be combined on the client. 

[Trygve Storrønningen1]

Visma, this topic is hot. And important. Relevant ideas and questions:

* https://community.visma.com/t5/Ideas-in-Developers-Visma-net/filtering-on-salesorders-endpoint-missi... 

* https://community.visma.com/t5/Forum-in-Developers-Visma-net/Filter-orders-on-min-and-max-date-Sales...