D28310: Wayland: Allow to set a scroll Factor for input devices

meven created this revision.
meven added reviewers: KWin, davidedmundson, zzag, bport, ervin.
Herald added a project: KWin.
Herald added a subscriber: kwin.
meven requested review of this revision.

REVISION SUMMARY
  Mouse and touchpad are concerned.
  
  CCBUG: 395404
  
  A Kcm patch is in the works

TEST PLAN
  build, ctest, manual set of scrollfactor value via qdbusviewer

REPOSITORY
  R108 KWin

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D28310

AFFECTED FILES
  autotests/libinput/device_test.cpp
  libinput/device.cpp
  libinput/device.h
  libinput/events.cpp

To: meven, #kwin, davidedmundson, zzag, bport, ervin
Cc: kwin, Orage, cacarry, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart