subscriptions: Add templating support and integrate with Binance (#1568)

* Subscriptions: Add List.AssetPairs

* Subscriptions: Add Template and QualifiedChannel

These fields separate the concept of what the channel is from the
qualified resource name

* Subscriptions: Add List.SetStates()

* Subscriptions: Add List.QualifiedChannels

* Subscriptions: Rename testsubs.EqualLists

* Binance: Switch to ExpandTemplates

* Binance: Update ConfigTest format

* Subscriptions: Test Coverage improvements

* Subscriptions: Reenterant List.ExpandTemplates

* Subscriptions: Move templates from subscriptions to exchanges

* Binance: Inline subscription template and improvements

exchanges/interfaces.go

@@ -2,6 +2,7 @@ package exchange
 
 import (
 	"context"
+	"text/template"
 	"time"
 
 	"github.com/thrasher-corp/gocryptotrader/common/key"
@@ -78,8 +79,10 @@ type IBotExchange interface {
 	SubscribeToWebsocketChannels(channels subscription.List) error
 	UnsubscribeToWebsocketChannels(channels subscription.List) error
 	GetSubscriptions() (subscription.List, error)
+	GetSubscriptionTemplate(*subscription.Subscription) (*template.Template, error)
 	FlushWebsocketChannels() error
 	AuthenticateWebsocket(ctx context.Context) error
+	CanUseAuthenticatedWebsocketEndpoints() bool
 	GetOrderExecutionLimits(a asset.Item, cp currency.Pair) (order.MinMaxLevel, error)
 	CheckOrderExecutionLimits(a asset.Item, cp currency.Pair, price, amount float64, orderType order.Type) error
 	UpdateOrderExecutionLimits(ctx context.Context, a asset.Item) error