cubicweb-vcsfile #2742334 add accessor on Repo entity to get the local hg repository path [validation pending]

prioritynormal
typeenhancement
done in1.12.2
load0.100
load left0.000
closed by#4601b649d643 [entities] have an accessor to the local repository path (closes #2742334)
patch[entities] have an accessor to the local repository path (closes #2742334) [applied]