feat(Tuples): add Flatten

[airismadeupofair]

Updates:

1. Added an impl folder in the Tuples directory with a local dir exports set up and the specific implementation added
2. Added an exports to in Tuples
3. Added test cases and jsdoc
4. Added simple and complex test cases

Note

Implementation is roughly 600 lines (86KB); documentation regarding the architecture and explanation is included within the implementation file.

##Usage

// One of the test cases

// hundred brackets test
type res1 = Call<Tuples.Flatten, [[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[1]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]], [[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[...string[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]], 100> // [1, ...string[]]