Fix query that computes quoter and syncs data on Dune

[harisang]

This PR addresses issue #62, which was caused by a change in our database. Specifically, the order_execution table now only contains entries for limit orders (and NOT market orders).

[sunce86]

Is it expected to have surplus_fee = 0 for market orders?

[harisang]

Is it expected to have surplus_fee = 0 for market orders?

I have to admit I don't remember on the top of my head how exactly is this table used and where, but indeed up till now, all market orders had a zero entry for surplus_fee in the raw_order_rewards table that we were syncing on Dune, which means this was the default behavior.

[fhenneke]

Is it expected to have surplus_fee = 0 for market orders?

At the moment, the surplus fee is only used in one line in the slippage query:

atoms_sold - coalesce(surplus_fee, cast(0 as uint256))        as atoms_sold,

It is used to correct the amount sold for limit orders to follow the same convention as for market orders: the total amount users send is atoms sold + (fee + surplus fee). It already uses a default value of 0, so uploading 0 is a bit redundant.

In the future we might use this entry to upload the total fee (in sell tokens). But it will not be used for anything except monitoring.