Search entire UniswapV3 fee range for longtail swaps

[0xApotheosis]

We currently have the 3000 fee range as the hardcoded route for swaps from longtail assets.

This means that:

1. We are not always getting the best rate if there are pools with lower fee ranges for the same assets pair with sufficient liquidity
2. We are missing asset pairs that only have pools outside the 3000 fee range.

Add logic to search all of the fee ranges and select the best one for the trade.