Implement Genetic Algorithm

[Lancasterwu]

Description of the Issue

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implement the genetic algorithm grouping method. Here is the introduction of this algorithm on Wikipedia

Steps to Reproduce Issue

Since this is a new feature, so there is no steps to reproduce this issue. However, this file should be in gatorgrouper/utils/ with test case in tests/

Screenshot (if possible)

Assigned Developers

@ilikerustoo @Lancasterwu