feat(tradingapp): TradingApp nitro force move app

[nksazonov]

[mod]

What about:

    enum Action { OPEN, FUND, ORDER, TRADE, SETTLE, DEFUND, CLOSE }

    struct Entry {
        Action  action;
        uint256 timestamp;   // The time the entry was created
        bytes32 metadata;    // The data/content of the entry
        bytes32 parent;      // Checksum of the previous entry
        bytes32 current;     // Checksum of the current entry
    }

    // current = keccak256(abi.encodePacked(action, timestamp, metadata, parent));

    // Nitro validation:
    // make a switch case on Action
    // When OPEN:    Verify both signed
    // When FUND:    Verify broker signed
    // When ORDER:   Verify Fund proof, and order is signed by Client
    // When TRADE:   Verify proof of order, verify parent is ORDER, signed by Broker
    // When SETTLE:  Verify proof of trade, verify parent is TRADE, signed by Both

[mod]

Using Named structs:

struct Order {
  bytes32 parent;  // Parent Event, can be 0 if first order
  bytes32 orderID; // tradeID
}

struct Trade {
  bytes32 orderID;  // orderID making the trade
  bytes32 tradeID;  // tradeID
}

struct Outcome {
  address token;
  uint256 amount;
}

struct Settle {
 Outcome[] toVault;
 Outcome[] fromVault;
 bytes32   parent;    // Likely the last TradeID
}