D5016: Add UI for hybrid suspend mode

[David Strobach]

strobach added reviewers: broulik, sebas.

REPOSITORY
  R122 Powerdevil

REVISION DETAIL
  https://phabricator.kde.org/D5016

To: strobach, broulik, sebas
Cc: plasma-devel, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, 
sebas, apol