Make KWin action menu consistent with task manager, use action verbs for...

Make KWin action menu consistent with task manager, use action verbs for configure items and add more icons

Summary: {F7329676}

Test Plan: Open the context menu for a window (Alt+F3).

Reviewers: #kwin, #vdg, ndavis, davidedmundson

Reviewed By: #kwin, #vdg, ndavis, davidedmundson

Subscribers: davidedmundson, ndavis, #vdg, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D23779