D18199: Add Kotlin (.kt) mimetype icons

[TrickyRicky]

trickyricky26 edited the test plan for this revision.

REPOSITORY
  R266 Breeze Icons

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

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