100% test coverage WIP

[BigEmperor26]

Duplicate of #113 because I accidentally merged it and now reverted.

100% test coverage on the files

• [X] plugins/pokedex-data-plugin/dex/ability.js
• [X] plugins/pokedex-data-plugin/dex/nature.js
• [X] plugins/pokedex-data-plugin/dex/details.js
• [X] plugins/pokedex-data-plugin/dex/types.js
• [X] plugins/pokedex-data-plugin/dex/egggroup.js
• [X] plugins/pokedex-data-plugin/dex/functions.js
• [X] plugins/pokedex-data-plugin/dex/types.js
• [X] plugins/pokedex-data-plugin/dex/ability.js
• [X] src/utils/dex/nature.js
• [X] src/utils/dex/details.js
• [X] src/utils/dex/types.js
• [X] src/utilx/dex/ability.js
• [X] src/utils/dex/egggroup.js
• [X] src/core/pokemonFormSelector.js
• [X] src/core/pokemonStatCalculation.js The main thing I changed for now was the testing for the default variables, which in many cases was missing.

Still WIP because I'm not done yet, but these are some changes for the moment so that we can keep track of them as we work on them