* Send trades down the DataHandler, add test
* Send the trades down to the DataHandler
Update the test to process trades for each asset type
Add raw trade data from OKX
Update the timestamp in the method
* Replace pair repetition with p var
* Update the test, remove repetition
* Rename trade var in the test
* Fix nits and slice sorting
* Compare trades
* Fix nits
* Okx: Fix WS order fields
* Fixes float64 with string annotation erroring on empty strings:
Okx Order Push Data error json: invalid use of ,string struct tag, trying to unmarshal "" into float64
Specifically this came from px field from a market order
* Switch to convert.StringToFloat64 instead of okxNumericalValue
* Fix typo in Notional* field names; Ironically prevented them from erroring
* Okx: Add tests for first order fields
* Okx: CID and maybe set WS order Filled time
* Tests: Set TestFixtureToDataHandler to t.Helper
* Orders: Add UnmarshalJSON to order.Side
* Okx: Fix FillTime not parsed for PendingOrder
* Okx: Switch to order.Side Unmarshal throughout
* Okx: Add Fee and FeeAsset to order processing
* Okx: Fix WS order.Detail amounts and Test
This fixes Amount vs QuoteAmount for market sells where tgtCcy is
quote_ccy
* Add comment to order.Side.UnmarshalJSON
* Okx: Replace PendingOrderItem Unmarshal with local types
* Okx: string type for WS order reduceOnly
Note: Not yet in unit tests, since it's not part of the spot tests I was
originally fixing. I'll circle back to adding full test support for
Reduce only and deleveraging positions.
* Okx: Fix TestOrderPushData Amount
We were expecting 0 when we're given a quoteAmount
In reality, we'll calculate the size from the price
* Okx: Fix order and remAmount in wsOrders
Improved handling for Float64 issues and boundaries when the order is
fully executed but not yet marked as Filled
* Fix ErrSideIsInvalid in tests
