random_shuffle is removed in C++17. code do not compile under MSVC. A…

[cgilles]

…dd new generic method to replace this std call

Older implementation work fine under Linux and MacOS, but later, it's not sure. Fix README Fix MSVC rules to compile fine with Visual C++2022.

[cgilles]

Hi, did you seen this PR ? This fix compilation with Qt6, MSVC and lasted Exiv2

[cgilles]

@scheckmedia

Any feedback here ?

Gilles