Add TaskManager requestActivities
Summary:
Acts like requestVirtualDesktops only with a QStringList
make runningActivities invokable
Test Plan: See subsequent plasma-desktop review
Reviewers: hein, Plasma
Reviewed By: hein, Plasma
Subscribers: hein, mart, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D1814