Remove/Refactor CubicWebRequest in CubicWeb

Currently there is a lot of CubicWeb Web logic in CubicWebRequest, which is added to all pyramid request.

2 solutions:

remove it and see if we can use only the CubicWeb connexion
remove some part of it to keep only what we really need in a CubicWeb without "web"

Edited Jan 25, 2023 by François Ferry

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