feat(shortcut): Add shortcut for delete chat and settings for deleting chats without confirm

[russell7]

• Map the delete chat shortcut to modifier + Backspace
• Provide an option to delete chats directly

feat(shortcut): 添加删除聊天的快捷键和设置选项

• 将删除聊天快捷键映射到 modifier + Backspace
• 提供选项直接删除聊天

[gemini-code-assist]

Summary of Changes

Hello @russell7, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new keyboard shortcut for deleting chats, mapped to modifier + Backspace. Additionally, it provides a new user setting that allows users to bypass the confirmation prompt when deleting chats, streamlining the deletion process for those who prefer it. This enhances user experience by offering more efficient chat management options.

Highlights

• New Keyboard Shortcut: A new keyboard shortcut (modifier + Backspace) has been added to quickly delete chats.
• Configurable Delete Confirmation: Users can now find a new setting to skip the confirmation prompt when deleting chats, allowing for direct deletion.

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[gemini-code-assist]

Code Review

这个 PR 增加了一个删除聊天的快捷键（modifier + Backspace），并提供了一个在设置中跳过删除确认的选项。代码实现得很好，功能清晰。我只发现了一个关于代码格式和可读性的小问题，并提供了一个改进建议。总体来说，这是一个不错的改进！

[gemini-code-assist]

这段代码的缩进有些不一致，影响了可读性。建议统一缩进。另外，虽然使用 || 短路操作符和 await 的组合是有效的，但对于一些开发者来说可能不够直观。可以考虑使用 if 语句来更清晰地表达逻辑，例如：

let confirm = store.state.general.isSkipDeleteChatConfirm;
if (!confirm) {
  confirm = await confirmModal.value.showModal(
    i18n.global.t("modal.confirmHideChat"),
  );
}

这里提供一个仅修正格式的建议。

  const confirm = store.state.general.isSkipDeleteChatConfirm ||
    await confirmModal.value.showModal(
      i18n.global.t("modal.confirmHideChat"),
    );