D15204: Add typewriter annotation tool

[Oliver Sander]

sander accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R223 Okular

BRANCH
  arcpatch-D15204

REVISION DETAIL
  https://phabricator.kde.org/D15204

To: tobiasdeiminger, sander
Cc: sander, okular-devel, ngraham, aacid