增加 provider 命令的提供商可用性显示

[zouyonghe]

增加 provider 命令的提供商可用性显示

Modifications / 改动点

provider指令不仅仅显示提供商，同时显示提供商可用性

provider.py

• This is NOT a breaking change. / 这不是一个破坏性变更。

Screenshots or Test Results / 运行截图或测试结果

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Checklist / 检查清单

• 😊 如果 PR 中有新加入的功能，已经通过 Issue / 邮件等方式和作者讨论过。/ If there are new features added in the PR, I have discussed it with the authors through issues/emails, etc.
• 👀 我的更改经过了良好的测试，并已在上方提供了“验证步骤”和“运行截图”。/ My changes have been well-tested, and "Verification Steps" and "Screenshots" have been provided above.
• 🤓 我确保没有引入新依赖库，或者引入了新依赖库的同时将其添加到了 requirements.txt 和 pyproject.toml 文件相应位置。/ I have ensured that no new dependencies are introduced, OR if new dependencies are introduced, they have been added to the appropriate locations in requirements.txt and pyproject.toml.
• 😮 我的更改没有引入恶意代码。/ My changes do not introduce malicious code.

Sourcery 总结

增强 provider 命令，使其在列出每个 provider 的同时，检查并显示其可达性状态

增强功能：

• 并发测试每个 provider 的连接性，通过获取模型列表并设置 4 秒超时
• 在每个 provider 旁边显示 ✅ 或 ❌ 指示器，以显示其可用性

Original summary in English

Summary by Sourcery

Enhance the provider command to check and display each provider's reachability status alongside its listing

Enhancements:

• Concurrently test each provider's connectivity by fetching model lists with a 4s timeout
• Display a ✅ or ❌ indicator next to each provider to show its availability

[sourcery-ai]

你好 - 我已经审阅了你的更改，它们看起来很棒！

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Original comment in English

Hey there - I've reviewed your changes and they look great!

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[zouyonghe]

使用dashboard实现替换提供商检测实现