[Checkup] Super Luck documentation and tests

[frutescens]

What are the changes the user will see?

None.

Why am I making these changes?

An ability checkup a day...

What are the changes from a developer perspective?

• Documentation and test added for Super Luck
• Super Luck's ability attribute has been revised to take in a number of stages to boost and add that number to the ability holder's critical hit stages instead of changing a booleanholder's boolean to true. This makes the ability attribute BonusCritAbAttr much more self-evident in what it exactly does. In addition, this also matches how moves with a higher critical hit rate function in pokemon.getCritStages

How to test the changes?

npm run test super_luck

Checklist

• I'm using beta as my base branch
• There is no overlap with another PR?
• The PR is self-contained and cannot be split into smaller PRs?
• Have I provided a clear explanation of the changes?
• Have I tested the changes manually?

• Are all unit tests still passing? (npm run test:silent)
  • Have I created new automated tests (npm run create-test) or updated existing tests related to the PR's changes?