D18199: Add Kotlin (.kt) mimetype icons

[TrickyRicky]

trickyricky26 added a subscriber: alex-l.

REPOSITORY
  R266 Breeze Icons

REVISION DETAIL
  https://phabricator.kde.org/D18199

To: trickyricky26, #vdg
Cc: alex-l, ngraham, kde-frameworks-devel, michaelh, bruns