Implement asset rebalance (Delta reduction via Buy / Sell assets) for Vendor (Binance)

[sadhbh-c0d3]

• Fetch Delta vector from DeVIL via Daxos contract
• Apply minimum thresholds, i.e. if asset delta below threshold then ignore
• Apply maximum thresholds, i.e. if asset delta above max threshold, cap
• Send asset orders to CEX (or later DEX)
• Receive fills and update internal inventory data structure
• Send new inventory state to DeVIL via Daxos contract

Supplier (Authorised Provider / AP) service needs to monitor on-chain Delta vector and keep it close to zero by sending Buy / Sell orders to CEX (and later DEX)

[jafar75]

In the updated design, Daxos -> Castle renaming/redesigning should be considered.

[sadhbh-c0d3]

Vendor upon initialization should call

• submitAssets() with the list of all assets it subscribed for market data. However list should not exceed 120 assets.
• submitMargin() with M computed from market data as shown in the paper
  Then it should periodically call:
• getVendorDemand() and subtract that from its internal (in-memory and not on-chain) Supply vector to obtain its own Delta vectors (long and short) (*)

(*) Vendor should know its Supply state, and should not use Delta computed on-chain, and instead re-compute Delta from on-chain Demand, that will allow you to accumulate Supply without submitting it, so that you can submit later bigger chunk.