feat(service): 添加 Ik3cloud 服务集成

- 在 rpc 结构体中新增 Ik3cloud 字段
- 更新 import 包列表，加入 git.kumo.work/shama/service/ik3cloud
- 调整结构体字段对齐格式

rpc.go

@@ -2,12 +2,14 @@ package service
 
 import (
 	"git.kumo.work/shama/service/erp"
+	"git.kumo.work/shama/service/ik3cloud"
 	"git.kumo.work/shama/service/oa"
 )
 
 var Rpc = &rpc{}
 
 type rpc struct {
-	Oa  oa.Oa
-	Erp erp.Erp
+	Oa       oa.Oa
+	Erp      erp.Erp
+	Ik3cloud ik3cloud.Ik3cloud
 }