create fully onchain split, get price, and trade smart contracts

[cotraders]

A fully onchain DEX aggrator will allow DeFi building blocks for cotrader.com and others.

Prices should be competitive with other DEX aggregator options..

Users can get prices and execute a split trade that gets the max tokens possible at the lowest prices available by using a combination of dexs, especially AMM Swap DEXs including Kyber, Bancor, Uniswap, Oasis.