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/count.go

@@ -0,0 +1,72 @@
+package product
+
+import (
+	"github.com/XingfenD/rainyun_api_go_sdk/constant"
+)
+
+// 产品数量
+type ProductCount struct {
+	TotalCount int `json:"TotalCount"`
+}
+
+// RbmProductCount 域名转售(RBM)产品数量
+type RbmProductCount struct {
+	TotalCount    int `json:"TotalCount"`
+	AboutToExpire any `json:"AboutToExpire"`
+}
+
+// 产品数量列表
+type ProductCountData struct {
+	Ros    ProductCount    `json:"ros"`
+	Rvh    ProductCount    `json:"rvh"`
+	Rcs    ProductCount    `json:"rcs"`
+	Rgpu   ProductCount    `json:"rgpu"`
+	Rgs    ProductCount    `json:"rgs"`
+	Ssl    ProductCount    `json:"ssl"`
+	Rbm    RbmProductCount `json:"rbm"`
+	Domain ProductCount    `json:"domain"`
+	Rcdn   ProductCount    `json:"rcdn"`
+	Rca    ProductCount    `json:"rca"`
+}
+
+type GetProductCountListResponse struct {
+	Code int              `json:"code"`
+	Data ProductCountData `json:"data"`
+}
+
+// 产品ID列表
+type ProductIDListData struct {
+	Rca    []int `json:"rca"`
+	Rcs    []int `json:"rcs"`
+	Ros    []int `json:"ros"`
+	Rvh    []int `json:"rvh"`
+	Rgpu   []int `json:"rgpu"`
+	Rgs    []int `json:"rgs"`
+	Ssl    []int `json:"ssl"`
+	Rbm    []int `json:"rbm"`
+	Domain []int `json:"domain"`
+	Rcdn   []int `json:"rcdn"`
+}
+
+type GetProductIDListResponse struct {
+	Code int               `json:"code"`
+	Data ProductIDListData `json:"data"`
+}
+
+// 获取各产品数量
+func (s *ProductService) GetProductCountList() (*GetProductCountListResponse, error) {
+	path := "/product/"
+
+	var resp GetProductCountListResponse
+	err := s.client.Do(constant.HTTPMethod_GET, path, nil, nil, &resp)
+	return &resp, err
+}
+
+// 获取产品ID列表
+func (s *ProductService) GetProductIDList() (*GetProductIDListResponse, error) {
+	path := "/product/id_list"
+
+	var resp GetProductIDListResponse
+	err := s.client.Do(constant.HTTPMethod_GET, path, nil, nil, &resp)
+	return &resp, err
+}