Implement taming foods for species

[coldino]

Taming foods were skipped for species previously because we did not have a method for discovering all possible foods. The hierarchy is now in place and works well, so this can be implemented.

• Add discovery of things that can be eaten, and their default stat effects
• For each species, calculate overridden stat effects of relevant foods
• Find a way to group the resulting data to reduce cluttered output

An example of one way to group relevant foods is Dododex's Gacha page, but this is manually collected and calculated. We need to device an automated method that also works for mods.