How to change splash screen in digiKam AppImage?

[Dmitri Popov]

Hello,

I switched to the AppImage version of digiKam, and it works like a
charm. I wonder, though, whether it's possible to replace the default
splash screen with a custom one. In a regular digiKam installation,
it's enough to replace the splash-digikam.png file in
/usr/share/digikam/data/. But that obviously wouldn't work with the
AppImage version.

Thank you,
Dmitri