Obey rule-of-three in NormalizedPoint and NormalizedRect

I.e. make sure they have destructor, copy constructor and asignment
operator

They don't really need them since it's plain data that can be copied
with the defaul implementations (which is actually what i am using) but
since we had some of them implemented and some not, clazy was
complaining that this is generally a bad idea, so implement them all