edje_cc: add option for verifying namespace usage
Summary:
when -N is passed, parts and program signals will be checked for
traditional namespacing based on the group name, causing compile failure
if inconsistency is detected
@feature
ref T6911
Reviewers: cedric, devilhorns
Reviewed By: cedric
Subscribers: committers
Tags: efl
Maniphest Tasks: T6911
Differential Revision: https://phab.enlightenment.org/D6036