A complete version of Uniswap V2 router in Plutus.
Usecases:
SwapExactTokensForTokens amount ['symbol1', 'symbol2', 'symbol3', ..., 'symboln']
Swaps exactly amount number of symbol1 for symboln
SwapTokensForExactTokens amount ['symbol1', 'symbol2', 'symbol3', ..., 'symboln']
Swaps symbol1 for exactly amount number of symboln