Binance,Okx: Add Leverage, MarginType, Positions and CollateralMode support (#1220)

* init

* surprise train commit

* basic distinctions

* the terms of binance are confusing

* renames and introduction of allocatedMargin

* add new margin funcs

* pulling out wires

* implement proper getposition stuff

* bad coding day

* investigate order manager next

* a broken mess, but a progressing one

* finally completes some usdtmargined stuff

* coinMfutures eludes me

* expand to okx

* imports fix

* completes okx wrapper implementations

* cleans and polishes before rpc implementations

* rpc setup, order manager features, exch features

* more rpc, collateral and margin things

* mini test

* looking at rpc response, expansion of features

* reorganising before the storm

* changing how futures requests work

* cleanup and tests of cli usage

* remove silly client side logic

* cleanup

* collateral package, typo fix, margin err, rpc derive

* uses convert.StringToFloat ONLY ON STRUCTS FROM THIS PR

* fix binance order history bug

* niteroos

* adds new funcs to exchange standards testing

* more post merge fixes

* fix binance

* replace simepletimeformat

* fix for merge

* merge fixes

* micro fixes

* order side now required for leverage

* fix up the rest

* global -> portfolio collateral

* Update exchanges/collateral/collateral_test.go

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

* adds fields and todos

* rm field redundancy

* lint fix oopsie daisy

* fixes panic, expands error and cli explanations (sorry shaz)

* ensures casing is appropriate for underlying

* Adds a shiny TODO

---------

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

cmd/gctcli/commands.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/thrasher-corp/gocryptotrader/common"
 	"github.com/thrasher-corp/gocryptotrader/currency"
+	"github.com/thrasher-corp/gocryptotrader/exchanges/margin"
 	"github.com/thrasher-corp/gocryptotrader/gctrpc"
 	"github.com/urfave/cli/v2"
 )
@@ -1420,6 +1421,11 @@ var submitOrderCommand = &cli.Command{
 			Name:  "asset",
 			Usage: "required asset type",
 		},
+		&cli.StringFlag{
+			Name:     "margintype",
+			Usage:    "required asset type",
+			Required: false,
+		},
 	},
 }
 
@@ -1436,6 +1442,7 @@ func submitOrder(c *cli.Context) error {
 	var price float64
 	var clientID string
 	var assetType string
+	var marginType string
 
 	if c.IsSet("exchange") {
 		exchangeName = c.String("exchange")
@@ -1510,11 +1517,22 @@ func submitOrder(c *cli.Context) error {
 		assetType = c.Args().Get(7)
 	}
 
+	if c.IsSet("margintype") {
+		marginType = c.String("margintype")
+	} else {
+		marginType = c.Args().Get(8)
+	}
+
 	assetType = strings.ToLower(assetType)
 	if !validAsset(assetType) {
 		return errInvalidAsset
 	}
 
+	marginType = strings.ToLower(marginType)
+	if !margin.IsValidString(marginType) {
+		return margin.ErrInvalidMarginType
+	}
+
 	p, err := currency.NewPairDelimiter(currencyPair, pairDelimiter)
 	if err != nil {
 		return err