cubicweb-pyramid #4317363 Add session storing entity [resolved]

The CWSession entity is meant to be included in cw 3.20 or later.

Meanwhile, to allow persistent sessions in CW 3.19 with pyramid_cubicweb, the pyramid cube should provide the entity, or at least an entity that can be used for persistent session storage.

done in0.1.0
load left0.000
closed by#fa614537e5ee Add a CWSession entity.
patchAdd a CWSession entity. [applied]