edje: add efl_version property

edje: add efl_version property

Summary:
efl_version will be used to figure out which version of EFL lib
is used to develop a edje file.
If there is no property of efl_version, it will be 1.19 as default.
This feature is needed to fix T5548.

Example:
  efl_version: 1 20

@feature

Test Plan: N/A

Reviewers: cedric, jpeg, herdsman, zmike, raster

Reviewed By: cedric

Maniphest Tasks: T5548

Differential Revision: https://phab.enlightenment.org/D4961

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>