fix issue #I3ODI5 swagger增加分组的功能

fix issue #I3PE3R 会签节点异常,提示'-1' was not present in ...
fix CodeSmith生成的后端代码报错 https://gitee.com/yubaolee/OpenAuth.Core/issues/I3OXJZ

OpenAuth.WebApi/Controllers/RolesController.cs

@@ -14,6 +14,7 @@ namespace OpenAuth.WebApi.Controllers
     /// </summary>
     [Route("api/[controller]/[action]")]
     [ApiController]
+    [ApiExplorerSettings(GroupName = "Roles")]
     public class RolesController : ControllerBase
     {
         private readonly RoleApp _app;