Licensing clarification in Plasma Vault

[Carl Schwan]

Hello Kees vd Broek,
you contributed to the file kded/ui/backendchooserwidget.ui in the plasma vault project,
we are currently converting all the license statements and unfortunately, it seems that
this file didn't contain a license statement.

The file can be found here: https://invent.kde.org/plasma/plasma-vault/-/blob/master/kded/ui/backendchooserwidget.ui

Do you agree to license this file under GPL-2.0, GPL-3.0, or any later version of the GPL
accepted by the membership of KDE e.V.?
(Reuse statement: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL)

If you could reply to this email and make sure plasma-devel at kde.org is in CC
or directly reply to this MR: https://invent.kde.org/plasma/plasma-vault/-/merge_requests/7.

Thanks for contributing to KDE,
Carl