Aruco improvements#3200

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opencv-pushbot merged 4 commits intoopencv:3.4from

AleksandrPanov:aruco_improvements

Apr 14, 2022

Commits on Mar 24, 2022

add writeDictionary(), dict distance, fix readDictionary(), readDetectorParameters()

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add aruco_dict_utils.cpp

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add py test_write_read_dict

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update tutorial
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