feat: onchain crude matter

[Kooshaba]

Goals

• Crude lives entirely onchain and is auditable by players
• Locations of Rifts and players mining Crude is shielded

Questions / Todos

• Should I also create a Lens ERC721 as part of this?
• Does Crude have an initial total supply of the token? In my mind it does not, the universe continues "minting" new tokens every time a Rift opens. We will have to modify the standard ERC20 contract to account for this.
• How does a ship own Crude? By default we need an address to be the owner of any token. In the past I have deployed special contracts which can own tokens and can be controlled by the MUD World for this purpose. It is a bit expensive gas wise, but allows us to preserve the base functionality of ERC20.

Tables

	CrudeLift: // Deployable
		smartObjectId: "uint256"
		lensId: "uint256"
		startMiningTime: "uint256"
		miningRiftId: "uint256"
	Lens:
		lensId: "uint256",
		durability: "uint256", // how many remaining blocks it can mine for
		exhausted: "bool",
	Rift: // Created by game server
		riftId: "uint256",
		createdAt: "uint256",
		crudeAmount: "uint256",

High Level Flow

• Game Server creates onchain rifts with a specific amount of Crude in them
  • This mints a Crude token at the moment of creation, but is owned by the World itself
  • This allows players to check the current total supply and inflation of Crude at any moment
  • No location onchain. Location is shielded by the game server until we can figure out a purely onchain solution.
• Player mints a Lens
  • Goes into their Ship inventory
  • Mint time is recorded in order to track expiry (TODO)
• Player create a Crude Lift
  • Object used to initiate the mining of a Rift
• Player deploys Crude Lift at a Rift
  • Inserts their Lens into Crude Lift inventory
  • Initiates mining
  • At the moment a Lens starts mining, onchain data related to its durability is updated. Lens durability is stored in a separate table.
• Player waits X blocks then:
  • Rift is depleted OR
  • Lens is broken (runs out of durability) OR
  • Player stops mining early OR
  • Lift is destroyed and mining stops
• Crude Matter is deposited into the Crude Lift Inventory
• Player withdraws Crude Matter into their Ship (TODO)