feat: migrate all remaining modules from rainyun-go-sdk

- domain(24), product(8), rbm(10), rca(21), rgs(38), ros(19),
  ssl(5), user(10), workorder(11), public remaining 5
- split nested response structs into reusable named types
- rgs reuses rcs request/response types
- fix source bugs: malformed paths, resp vs &resp, missing bodies
- register all 11 services in sdk.New

apis/product/renew.go

@@ -0,0 +1,22 @@
+package product
+
+import (
+	"github.com/XingfenD/rainyun_api_go_sdk/apis/common"
+	"github.com/XingfenD/rainyun_api_go_sdk/constant"
+)
+
+// 积分续费请求
+type PointRenewalRequest struct {
+	DurationDay int    `json:"duration_day"` // 续费天数
+	ProductID   int    `json:"product_id"`   // 产品ID
+	ProductType string `json:"product_type"` // 产品类型: rcs/rgs/ros/rvh/rcdn
+}
+
+// 积分续费
+func (s *ProductService) PointRenewal(req *PointRenewalRequest) (*common.BasicOperationResponse, error) {
+	path := "/product/point_renew"
+
+	var resp common.BasicOperationResponse
+	err := s.client.Do(constant.HTTPMethod_POST, path, nil, req, &resp)
+	return &resp, err
+}