when using resume allow people to favorite sessions so they are easily found

### Describe the feature or problem you'd like to solve

finding sessions and resuming sessions should be easier

### Proposed solution

int the --resume menu allow users star (*) sessions and add a favorites (starred) section just like Local, Remote, All

### Example prompts or workflows

copilot --resume

All, Favorites, Local, Remote

| * | # | Summary |
|---|---:|---|
| * | 1 | Create New service |
| | 2 | Summarize Emails |

### Additional context

copilot --resume

All, Favorites, Local, Remote

| * | # | Summary |
|---|---:|---|
| * | 1 | Create New service |
| | 2 | Summarize Emails |

从 `copilot --resume` 入口开始，跟踪恢复菜单如何列出和选择会话。确定会话星标状态和 Favorites 部分应放在哪里；完成的标准是用户可以为会话加星标，并在 Favorites 中与 All、Local 和 Remote 一起找到这些会话。

由索引模型根据 Issue 内容生成。