Warehouse keeper game Skladnik into KDE Gear (for 24.05)

[Friedrich W. H. Kossebau]

Hi,

I propose to move Skladnik to KDE Gear for 24.05 to rejoin the set of KDE 
games again, which it already was part of in KDE 1-3 times (by the name 
KSokoban).

It just passed kde(re)review, and before has seen recent releases, by some 
0.5.0 last year, and this year some translations update 0,5,1.
It also has just turned Qt6/KF6-only and will see a 0.5.2 release with that 
right after Mega6 (planning for Feb. 29th).

Prepared respective MRs:
https://invent.kde.org/sysadmin/release-tools/-/merge_requests/47/diffs

For some history and more info about this game, see last release announcement
https://mail.kde.org/pipermail/kde-announce-apps/2024-January/005782.html

Cheers
Friedrich