feat(rcs): migrate all RCS APIs from rainyun-go-sdk

- 35 endpoints across 14 files, response structs split for reuse
- Reuse RcsRecord/Node/Plan/OsInfo/UsageData across list/detail/create
- Fix source bugs: {id} path placeholders, missing / in firewall pos path,
  missing body in ChargeRcsTrafic, resp vs &resp
- Add HTTPMethod_PATCH, common.BasicOperationResponse, VncConnectionInfo

apis/rcs/changeos.go

@@ -0,0 +1,26 @@
+package rcs
+
+import (
+	"fmt"
+
+	"github.com/XingfenD/rainyun_api_go_sdk/apis/common"
+	"github.com/XingfenD/rainyun_api_go_sdk/constant"
+)
+
+type ReinstallRcsRequest struct {
+	AppVars []struct {
+		AppID int  `json:"app_id"`
+		Retry bool `json:"retry"` // 重发之前的任务,此项存在时,无需传入参数
+		Vars  any  `json:"vars"`
+	} `json:"app_vars"` // 当空数组时,进行单次任务下发
+	OsID     int  `json:"os_id"`     // 系统ID
+	ResetOsd bool `json:"reset_osd"` // 重置系统盘容量
+}
+
+func (s *RcsService) ReinstallRcs(id int, req *ReinstallRcsRequest) (*common.BasicOperationResponse, error) {
+	path := fmt.Sprintf("/product/rcs/%d/changeos", id)
+
+	var resp common.BasicOperationResponse
+	err := s.client.Do(constant.HTTPMethod_POST, path, nil, req, &resp)
+	return &resp, err
+}