Use loadFromModule, instead of load, as it's the simpler and newer API.
That requires renaming main.qml to Main.qml, and some changes to the
CMakeLists.txt file. That gets rid of a runtime warning about using
relative URLs.
Moreover, avoid adding an import path we don't need, and remove the
error handling for the case where loading fails – we know it can't fail.
Pick-to: 6.10
Fixes: QTBUG-138177
Change-Id: I01a3eac70147bf5aef6456be0b634af933daae20
Reviewed-by: Olivier De Cannière <olivier.decanniere@qt.io>
Fabian Kosmale