Summary:
C# bindings will be lincensed under Apache Sofware License 2.0.
This commit adds the license text to the licenses folder and a copyright
notice to the binding files.
Fixes T8039
Reviewers: woohyun, felipealmeida, vitor.sousa
Reviewed By: felipealmeida
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Maniphest Tasks: T8039
Differential Revision: https://phab.enlightenment.org/D9414
Lauro Moura