Replace the go model from custom to the official

[LinuxSuRen]

It's not necessary to define the swagger related sturcts by ourself. We don't need to consider the details. Please see also the following links if you're interested in it.

• https://github.com/go-openapi
• https://github.com/LinuxSuRen/api-testing/blob/01da53f39e651a1178ee1d41033cf74990914c13/pkg/apispec/swagger.go

[dshyjtdes8888]

你好，我想在开源之夏中申请这个项目，想尝试一下完成这个issue，目前已经把项目在本地跑起来了，正在理解中

[LinuxSuRen]

@dshyjtdes8888 您好，欢迎参与，有什么问题都可以留言