Kitinerary is a project to plan an itinerary and combines an app and a KDE PIM plugin for that. The actual library is already available with kde-apps/kitinerary. For developing and debugging this library (especially the extractors) a seperate tool exists: kitinerary-workbench (see the linked URL). I would be nice, if you can package this, too (maybe in the KDE overlay). Reproducible: Always More information are available here: https://www.volkerkrause.eu/2018/09/08/kde-itinerary-writing-custom-extractors.html
kde overlay is always open to PRs.