新增 CountryCode 2端点: GET /api/v2/countryCode/{map,all}
新增 Warehouse 5端点: statusList/list/add/edit/delete

Part A (CountryCode): BaseCountryCodeModel + SaasAdminService 集成 +
BaseCountryCodeService/Controller, 本地缓存 TTL 1 小时
Part B (Warehouse): CustomWarehouseInfoAppService/Controller,
支持分页模糊查询/状态列表/CRUD

Co-Authored-By: Claude <noreply@anthropic.com>