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/vnc.go

@@ -0,0 +1,36 @@
+package rcs
+
+import (
+	"fmt"
+	"net/url"
+
+	"github.com/XingfenD/rainyun_api_go_sdk/apis/common"
+	"github.com/XingfenD/rainyun_api_go_sdk/constant"
+)
+
+// GetRcsVnc 连接VNC
+//
+// consoleType: 控制台类型,可选值: novnc,xtermjs
+func (s *RcsService) GetRcsVnc(id int, consoleType string) (*common.VncConnectionInfo, error) {
+	path := fmt.Sprintf("/product/rcs/%d/vnc", id)
+
+	var resp common.VncConnectionInfo
+	querys := map[string]string{"console_type": consoleType}
+	err := s.client.Do(constant.HTTPMethod_GET, path, querys, nil, &resp)
+	return &resp, err
+}
+
+// GetRcsPveAddress 获取RCS对应的PVE地址
+func (s *RcsService) GetRcsPveAddress(id int) (string, error) {
+	v, err := s.GetRcsVnc(id, "novnc")
+	if err != nil {
+		return "", err
+	}
+
+	parsedURL, err := url.Parse(v.Data.RequestURL)
+	if err != nil {
+		return "", err
+	}
+
+	return parsedURL.Hostname(), nil
+}