D29272: Add support to keyboard shortcuts inhibitor

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

REVISION SUMMARY
  Depends on: D29231 <https://phabricator.kde.org/D29231>
  
  - Disable all global shortcuts
  - For now don't disable spies (So opening menu with meta key is not disabled for now)

TEST PLAN
  Tested with https://github.com/swaywm/wlroots/blob/master/examples/keyboard-shortcuts-inhibit.c

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D29272

AFFECTED FILES
  input.cpp
  wayland_server.cpp
  wayland_server.h

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