style: 去除Impl接口声明层聚焦服务函数

src/modules/system/repository/sys_dict_data.impl.go

@@ -13,7 +13,7 @@ import (
 )
 
 // 实例化数据层 SysDictDataImpl 结构体
-var NewSysDictDataImpl = &SysDictDataImpl{
+var NewSysDictData = &SysDictDataImpl{
 	selectSql: `select 
 	dict_code, dict_sort, dict_label, dict_value, dict_type, tag_class, tag_type, status, create_by, create_time, remark 
 	from sys_dict_data`,

src/modules/system/repository/sys_dict_type.impl.go

@@ -13,7 +13,7 @@ import (
 )
 
 // 实例化数据层 SysDictTypeImpl 结构体
-var NewSysDictTypeImpl = &SysDictTypeImpl{
+var NewSysDictType = &SysDictTypeImpl{
 	selectSql: `select 
 	dict_id, dict_name, dict_type, status, create_by, create_time, remark 
 	from sys_dict_type`,