D5403: Support blocking of screen edges on active fullscreen windows also for touch

[Martin Gräßlin]

graesslin added a reviewer: leinir.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D5403

To: graesslin, #kwin, #plasma, leinir
Cc: plasma-devel, kwin, progwolff, lesliezhai, ali-mohamed, hardening, 
jensreuterberg, abetts, sebas, apol