Content registration — declare custom items and blocks from Rust.
Definitions are collected at registration time and handed to the host, which
registers real Item/Block objects before the game's registries freeze,
puts them in per-namespace creative tabs, and applies their properties.
(Textures, models and recipes are assets/data shipped in the .yog and
served to the game.)
# use ;
new.name.tooltip.max_stack;
new.food;
new.light_level.sound;