Add Two Bucket Test Generator

[jpreese]

This issue is part of an overall initiative to complete #195.

The documentation on how to add generators can be found here. If you get stuck or have any questions about adding this generator, please do not hesitate to reach out!

[GKotfis]

I'll deal with it.

[GKotfis]

Question about file & class names. Exercise, project name and canonical-data are "TwoBucket". But class name in exercise is "TwoBuckets. As I see generator use class name also for finding canonical-data and here is the problem. The quickest option will be to change class name in exercise to TwoBucket?

[jpreese]

@GKotfis yep! Feel free to update the existing class. This case is specifically outlined in the provided generators documentation :)

[robkeim]

@GKotfis for some historical context, when this project started we didn't have any canonical data so each of the different tracks had a lot of liberty in their implementations (naming, what they tested, etc).

Now we're trying to standardize to have a more consistent experience across tracks which is great, but we're trying to retrofit our existing solutions into the generators. For some exercises it's very straightforward but other exercises need a larger refactoring.

[ErikSchierboom]

Fixed by #447.