Add the values of the Inotify find call to the appropriate lists

Summary:
* Add ${Inotify_INCLUDE_DIRS} to the viewer targets includes
* Add ${Inotify_LIBRARIES} to the viewer targets libraries

Reviewers: #freebsd, mlaurent

Reviewed By: mlaurent

Subscribers: #kde_pim

Tags: #kde_pim

Differential Revision: https://phabricator.kde.org/D9498