Add new standard KDE tab switching shortcuts (ctrl+pgup/pgdn)
Summary:
BUG: 383603
Add the new KDE standard tab switching shortcuts that were introduced in https://phabricator.kde.org/R237:d85a57645f94d2d087711d7c608a0c5a46ed7ede.
Test Plan: Built and tested with current git master in up-to-date KDE Neon. Expected behavior is seen (default shortcuts have become shift+left/right and cmd+pgup/pgdn).
Reviewers: KDE Applications, Konsole, hindenburg, aacid, ltoscano, pino, dfaure
Reviewed By: dfaure
Subscribers: dfaure, davidedmundson, aacid, Konsole
Tags: Konsole
Differential Revision: https://phabricator.kde.org/D7354