Run Github Copilot App in Browser like vscode-web

### Feature summary

_No response_

### What problem are you trying to solve?

Thousands of customers use [DevPods](https://devpod.sh/) which are accessable only over webversion of vscode or over ssh. Bringing Devs and none devs back to their Desktop to do dev does not make sense.

The Github Copilot app should provide a webversion like [vscode webversion](https://code.visualstudio.com/docs/remote/vscode-web) which allows to work on the DevPod with multiple sessions and multi repositories.
This approach allows to have a clear and secure DevPod boundary, and no need to harden the Github Copilot app for windows setups.

### Proposed solution

Provide Github Copilot App as webserver version to be deployed on remote host, so that it can be used in standardized development environments like DevPods.

### Workflow impact

_No response_

### Installation context

_No response_

### Additional context

_No response_

该 issue 没有指出任何仓库文件、测试或入口点。首先查看链接的 VS Code Web 和 DevPod 参考资料，以了解所请求的远程主机工作流。对于 Copilot 应用，定义一条支持多个会话和多仓库的 Web 服务器部署路径，即可视为完成。

由索引模型根据 Issue 内容生成。