By setting the deprecation version for KRunner to 5.91,
the negated deprecation wrapper will evaulate to true and
we get compatibility typedefs.
This way we do not need to add the typedefs manually or
add `using namespace Plasma` to the plugins.
Task: https://phabricator.kde.org/T15140
- Use constant values instead of parameter if value is always the same
- Define lambda to add new test, this works around
https://bugs.llvm.org/show_bug.cgi?id=45018 and gives useful hints in an
IDE
Alexander Lohnau