Make shapes of pies and feasts rotate depending on their direction

[TheGridExpert]

Added shapes for each stage of the pies and made them rotate depending on the direction. Same with the feasts, but only for Shepherd's Pie, Honey Glazed Ham and Roast Chicken. I decided not to do this for the Rice Roll Medley because the model would be far too complicated.

https://github.com/user-attachments/assets/4b55e654-7ff1-429a-af03-ce78a31c9601

(Also, AddItemModifier, FDAddTableLootModifier and PastrySlicingModifier were made public in order to allow data generation with them in addon mods)