👑[Enhancement] 添加octocaptcha和www.github.com

### 🥰 需求描述(Description)

希望添加`octocaptcha.com`和`www.github.com`的加速选项。

前者是GitHub所用的验证码平台，后者虽然GitHub已经默认不使用www子域名，一些旧网站也仍然在使用。

### 🧐 解决方案(Solution)

虽然就大多数情况而言只需要手动打开Hosts文件添加这两个链接到127.0.0.1就可以了，可能新手会搞不明白，故申请启动加速时向`hosts`文件添加这两个域名。

Locate the existing acceleration and hosts-file implementation, then inspect how its domain list is managed. Use octocaptcha.com and www.github.com as the scoped additions, and verify that enabling acceleration adds both entries while disabling it removes or restores them without affecting other entries.

Written by the indexing model from the issue text.