D15204: Add typewriter annotation tool

[Tobias Deiminger]

tobiasdeiminger added a dependent revision: D15205: Support setting font color 
for typewriter annotation.

REPOSITORY
  R223 Okular

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

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