Add Sentry SvelteKit SDK via `sv` CLI

### Problem Statement

Nowadays, the `sv` CLI is the official Svelte project scaffolding and support CLI. I talked to one of the maintainers at Svelte Summit and we briefly discussed adding an option to add the Sentry SDK to a project via `sv`. This would be cool, because it's the svelte-native way of adding important plugins and tools to SvelteKit projects.

### Solution Brainstorm

- discuss if this can actually get merged
- invoke the Sentry wizard from within the `sv` flow -- this should be doable according to maintainers

该 issue 提到了 sv CLI 流程和 Sentry wizard，但没有提供任何 repository 文件或测试。首先与 Svelte 维护者确认此集成是否可以合并，并确定用于调用 wizard 的 sv 入口点。当 sv 提供向 SvelteKit 项目添加 Sentry SDK 的选项时，即表示完成。

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