Edit function template parameters toMap and toUnorderedMap

[MarcDirven]

cpp-lazy/include/Lz/detail/BasicIteratorView.hpp

Line 106 in 55af068

template<class KeySelectorFunc,

Create a wrapper function for toMap and toUnorderedMap so that when one has to specify for e.g. the Hasher template parameter, one does not also has to specify the Key template parameter as well, since that can be deduced automatically by using decltype(std::declval<Func>()).