feat: support free model setting

setting/operation_setting/quota_setting.go

@@ -0,0 +1,21 @@
+package operation_setting
+
+import "github.com/QuantumNous/new-api/setting/config"
+
+type QuotaSetting struct {
+	EnableFreeModelPreConsume bool `json:"enable_free_model_pre_consume"` // 是否对免费模型启用预消耗
+}
+
+// 默认配置
+var quotaSetting = QuotaSetting{
+	EnableFreeModelPreConsume: true,
+}
+
+func init() {
+	// 注册到全局配置管理器
+	config.GlobalConfig.Register("quota_setting", &quotaSetting)
+}
+
+func GetQuotaSetting() *QuotaSetting {
+	return &quotaSetting
+}