quicksettings/caffeine: Port away from P5Support DataSource

Devin Linrequested to merge
work/devinlin/caffeine into master

Port away from the deprecated DataSource component in favour of the inhibition plugin.

See https://invent.kde.org/plasma/powerdevil/-/blob/master/applets/batterymonitor/plugin/inhibitioncontrol.h

Edited by Devin Lin

Merge request reports