Add support for touch events in fakeinput protocol and interface.
Summary:
This adds support for following in fakeinput interface:
- touch_down
- touch_motion
- touch_up
- touch_cancel
- touch_frame
Test Plan: added autotests passes
Reviewers: Plasma, bshah, graesslin
Reviewed By: Plasma, bshah, graesslin
Subscribers: bshah, graesslin, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D1672