Using "halve" as a verb properly, overwrite base halving recipe to properly halve nutrition.

Added Traditional Chinese localization

Added EN localization

Fixed halving fillets to actually half the nutrients

Removed debug print statements

Add ability to process fish beyond intial filleting of whole fish.
* Half fillet: Losslessly create two fillets from a single fillet, respecting hunger and weight.
* Portion Fillet: Losslessly create a -15 hunger fillet from a larger fillet, respecting hunger and weight.
* Trim Fillet: Remove 'excess weight' from fillet (target 0.5 for -15 hunger), cooking skill and sharpness of knife affect potential food wastage (chance of up to -50% with 0 skill and using a sharp rock, down to 0% with sharp knife and high skill)