Set component display name for touchboard and keyboard kcm action collections

Summary: Otherwise they get assigned a generic "KDE Daemon" name because of kded

Test Plan: restart kded, check in qdbusviewer or global shortcut kcm

Reviewers: ngraham, #plasma

Reviewed By: ngraham

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D29052