kristofer/JavaExercism: lots of exercises in java... from https://github.com/exercism/java

lots of exercises in java... from https://github.com/exercism/java

morrme 2f6bb44e74 rectangles: add hint to @Ignore annotations		9 lat temu
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example/java	Polish example rectangles implementation	9 lat temu
main/java	rectangles: add to track	9 lat temu
test/java	rectangles: add hint to @Ignore annotations	9 lat temu