create `net_setQueryResponse` daemon RPC call 
there should be an RPC call to set the query response sent out:
```
type QueryResponse struct {
	Provides      []ProvidesCoin
	MaximumAmount []uint64
	ExchangeRate  common.ExchangeRate
}
```

the RPC call should accept a list of coins, and list of maximum amounts, and the exchange rate (optional)