cubicweb #3171980 bases for instrumentalizing / debugging standard propagation schema/hooks [validation pending]

as used by localperms/nosylist.

Some problems could be easily spotted and a graph would help to have proper configuration when the schema grow.

prioritynormal
typeenhancement
done in3.18.0
load1.000
load left0.000
closed by#10694dd136f3 [devtools] bases for instrumenting / debugging standard propagation hooks
patch[devtools] bases for instrumenting / debugging standard propagation hooks [applied][dev tools] closes #3171980: bases for instrumentalizing / debugging standard propagation schema/hooks [folded][devtools] closes #3171980: bases for instrumentalizing / debugging standard propagation hooks [folded]