Add icon to compress/extract actions

Summary:
{F6484732}

{F6484734}

Reviewers: #ark, ngraham, elvisangelaccio

Reviewed By: #ark, ngraham, elvisangelaccio

Subscribers: broulik, kde-utils-devel

Tags: #ark

Differential Revision: https://phabricator.kde.org/D15801