Begun redesign of binance futures websocket. Added test provider for testing purposes.

services/data_service/internal/provider/providers/binance/ws/shard.go

@@ -0,0 +1,12 @@
+package ws
+
+import (
+	"github.com/coder/websocket"
+	"github.com/google/uuid"
+)
+
+type shard struct {
+	ID            uuid.UUID
+	conn          websocket.Conn
+	activeStreams []string
+}