Add highlighting file for Wayland Debug Traces

Summary:
When running a Wayland application with parameter WAYLAND_DEBUG=1, all
communication between Wayland server and client is printed to the
standard output. This scheme highlights the interfaces, called functions
and parameters.

Reviewers: cullmann

Reviewed By: cullmann

Subscribers: cullmann, kwrite-devel, kde-frameworks-devel

Tags: Kate, Frameworks

Differential Revision: https://phabricator.kde.org/D17139