增加addfile to chat的快捷菜单功能

[GayeChen]

What problem does this solve?

当前想要将一个文件/文件夹路径添加到对话框比较繁琐，我需要先复制文件的路径，然后再切换到插件界面，然后使用@操作，再粘贴路径，这样操作比较繁琐

What's the proposed solution?

在文件的菜单上增加一个选项，让文件视角下可以快速切换到@文件，并开始新任务

Are you interested in implementing this?

Yes, I'd like to implement this myself

Implementation approach (if contributing)

我想要添加一个指令，在文件的菜单选项中增加一个选项add file to cline，然后调用内部addToInput工具将当前文件路径的直接添加到chat

Proposal checklist

• [x] I've checked for existing issues or related proposals
• [x] I understand this needs review before implementation can start

Contribution checklist (if contributing)

• [x] I've read the Contributing Guide
• [x] I'm willing to make changes based on feedback
• [x] I understand the code review process and requirements

[0xToshii]

you can currently drag/drop files into the search box when you hold down shift or select the '+' button to select files from your computer. i'm not sure if this is what youre referring to

[GayeChen]

I want to add the path of a file to the chatbox in the file perspective, like this：

[saoudrizwan]

This is a great feature idea! Can you please create a feature request here so that we can get around to adding it? 🙏 https://github.com/cline/cline/discussions/categories/feature-requests