[pygeoapi] Support for CRS - via OGC OAFeat Part 2

[Just van den Broecke]

Hi Folks,

This is about Part 2 of OGC API Features [1] implementation in pygeoapi.
In summary, Part 2 is about:

* How, for each offered feature collection, a server advertises the list 
of supported CRS identifiers;

* How the coordinates of geometry valued feature properties can be 
accessed in one of the supported CRSs;

* How features can be accessed from the server using a bounding box 
specified in one of the supported CRSs; and

* How a server can declare the coordinate reference system used to 
present feature resources.

AFAICS there is no activity yet in pygeoapi. There is interest from a 
Dutch government organization for the EU INSPIRE case to at least serve 
Features in different CRSs as specified in requests. There may be some 
budget for implementation.
This is a preliminary poll for, especially for PSC:

* is there any planned (CRS-) activity you know of?
* estimate for a minimal implementation, for example to support only OGR 
provider?
* who would be interested to perform this (paid) development?
* other parties who may join funding?

[1] http://docs.opengeospatial.org/is/18-058/18-058.html

Thanks for any insights. Best,

Just van den Broecke