x11-themes/kf6-breeze-icons: Add generated icons

This fixes pkg-plist if devel/py-lxml is installed and restores the
24x icons already found in kf5-breeze-icons.

Add binary resources for databases/kexi, so this port can be used as a
drop-in replacement for its kf5 counterpart.

Pet portclippy(1).

MFH: 2025Q1
(cherry picked from commit 64f8a6664684eebf27ec66021e5b8fdcb28f7535)