feat: 新增Packet结构体及构造函数以支持网络数据包处理

internal/network/types.go

@@ -0,0 +1,17 @@
+package network
+
+import "time"
+
+type Packet struct {
+	Type      string      `json:"type"`
+	Timestamp int64       `json:"timestamp"`
+	Payload   interface{} `json:"payload"`
+}
+
+func NewPactet(msgType string, payload interface{}) Packet {
+	return Packet{
+		Type:      msgType,
+		Timestamp: time.Now().Unix(),
+		Payload:   payload,
+	}
+}