add plugins

pkg/plugin/builtin.go

@@ -0,0 +1,16 @@
+package plugin
+
+// RegisterBuiltins 注册所有内置 plugins
+// 注意：此函数需要在调用方导入 builtin 包并手动注册
+// 示例:
+//   registry := plugin.NewRegistry()
+//   registry.RegisterBuiltin(builtin.NewSOCKS5Plugin())
+//   registry.RegisterBuiltin(builtin.NewHTTPPlugin())
+func RegisterBuiltins(registry *Registry, handlers ...ProxyHandler) error {
+	for _, handler := range handlers {
+		if err := registry.RegisterBuiltin(handler); err != nil {
+			return err
+		}
+	}
+	return nil
+}