Feature: Printing test results should be split by directory

[OFFTKP]

recursive_directory_iterator should first get all the directories and pass the paths to a vector. Get the directory names and pass those too (new struct?) so that when we iterate them we can do /dir1/dir2/ etc.

Then for every directory, use a normal directory_iterator to get all the files, and test accordingly. Pass directory accordingly.

[OFFTKP]

TestData now shows name of directory/file