[Checkpoint] Instant Cook

Instant Cook Checkpoint

This checkpoint records the Instant Cook, a deprecated cooking system that allows players to cook food instantly and get the output at the price of one-time fuel consumption.

// in lib/core/item.dart
// Core concept: 
class CookableComp {}

Item("foo")
.asCookable(
  CookType.cook,
  fuelCost: 150,
  output: () => cookedFoo,
)