master is for Qt6-based development now

Qt5 development continues in the 'kf5' branch

master is Qt6 now

Getter and signal were already there, but the property declaration was missing.

We need to manually import the QML plugin in case of static builds.
Also, the IID is required, because Qt internally checks this value to determine, if the
plugin as an actual QML plugin.

Requires extra-cmake-modules!303

BUG: 459340

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Marius Pa authored Jul 31, 2022 and Albert Astals Cid committed Aug 11, 2022

Fix PVS-Studio issue "/autotests/managertest.cpp:299: error: V773
The function was exited without releasing the 'manager' pointer.
A memory leak is possible.".

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Task tracked at:
teams/frameworks-devs/kf6-workboard#2

Due to backward compatibility the old name is kept with a TODO comment.
It does not seem to be used anywhere in our code though.