添加对 Thunderbird 的支持 / Add support for Thunderbird

[ShellWen]

新功能 | New Feature

添加对 Thunderbird 的支持，开发针对 Thunderbird 的插件，允许沉浸式翻译邮件标题和正文。

Add support for Thunderbird and develop a plugin for Thunderbird that allows immersive translation of email titles and body.

为什么您想要添加这些功能 | Why you want to add these features

Thunderbird 是一个广泛使用的邮件客户端，开发针对 Thunderbird 的版本，可以进一步扩展插件的用户覆盖群体。

Thunderbird is a widely used email client, and developing a version for Thunderbird would further extend the plugin's user reach.

提议 | Proposal

Thunderbird 虽然是一个邮件客户端，但它的插件开发应该与 Firefox 浏览器无异，可能需要一些针对邮件正文等的特殊的适配。

Thunderbird is an email client, but its plugin development should be similar to that of the Firefox browser, and may require some special works.