优化代码结构

server/fwd/repo/node.go

@@ -0,0 +1,15 @@
+package repo
+
+import "gorm.io/gorm"
+
+// Node 客户端模型
+type Node struct {
+	gorm.Model
+	Name     string
+	Version  byte
+	FwdPort  uint16
+	Provider string
+	Location string
+
+	Channels []Channel `gorm:"foreignKey:NodeId"`
+}