fix github login on vercel preview deployments

It's probably something I should do but I haven't found a solution so far, so I'm open to get some help :)

When logging in via GitHub App, on the settings I must add a callback URL that will be used to redirect the user after sign in
(see docs: https://docs.github.com/en/apps/creating-github-apps/registering-a-github-app/about-the-user-authorization-callback-url)

This works fine for production and localhost as I specified the two URLs:

But it doesn't work for Vercel's deployment previews as they have different URLs.
I haven't found a way to put wildcards on GitHub or specify a redirect URL that works so... if someone has ideas, let me know! :D

从 GitHub App 用户授权回调 URL 文档以及 issue 中描述的现有 production 和 localhost 回调配置开始。调查如何在不使用 issue 所说不可用的 wildcard 设置的情况下支持 Vercel preview URL。完成标准是：GitHub 登录能够从 deployment preview 以及 production 和 localhost 成功重定向。

由索引模型根据 Issue 内容生成。