[General] Add options to curate the "Open in" list.

**Mood:** 😊
**Category:** General

Add options to curate the "Open in" list.
The list (Terminal, PowerShell, Command Prompt, Bash) only supports adding apps. Add a way to hide/show defaults so the list can be curated — e.g. a "More" dialog to add custom tools and toggle visibility per entry. I want to remove some of the defaults, not just add others.

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| Field | Value |
| --- | --- |
| App version | 0.2.34 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 2 |

首先定位“Open in”列表的实现和现有的添加应用设置，然后跟踪默认条目是如何定义和显示的。当用户可以添加自定义工具，并且可以独立隐藏或显示每个默认条目，同时精选列表也反映在界面中时，即表示完成。

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