Beginning of work of get central configuration object

Beginning of work of get central configuration object
that will be used by the binding to access generated
elements. It will hold generated structure/objects and
make a resume to the binding configuration.

Idea is to have an object that can be inherited
in the generated code to extend its functionnalities
or change some of its behoviors.

Change-Id: If2ce5cbe2eb98a74a8e3f13000ee02855674216f
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>