These classes need to be public so new user-created classes can inherit
from them, but they have the same content as the regular classes.
Therefore there is no need to pollute the documentation with duplicated
elements.
Summary: Usage instructions in the README file.
Test Plan:
Follow the README to produce the documentation pages.
Point your browser to docfx/_site/index.html to see the results.
Reviewers: lauromoura, bu5hm4n, cedric, myoungwoon, zmike
Reviewed By: lauromoura, bu5hm4n
Subscribers: #reviewers, #committers
Tags: #efl
Maniphest Tasks: T7424
Differential Revision: https://phab.enlightenment.org/D7502