便捷上传功能

### Please make sure of the following things

- [ ] I have read the [documentation](https://alist.nn.ci).
- [ ] I'm sure there are no duplicate issues or discussions.
- [x] I'm sure this feature is not implemented.
- [ ] I'm sure it's a reasonable and popular requirement.

### Description of the feature / 需求描述

版本：v3.37.4
便捷上传功能，也就是有些时候我需要上传文件，复制文件地址。这个循环步骤。
方法1：所以我希望拖拽文件上传，支持在文件列表展示区域直接支持拖拽上传文件，而不是点击上传后批量上传。因为这样我无法一个个复制文件。
方法2：在现有的上传列表，支持复制文件下载地址。

### Suggested solution / 实现思路

_No response_

### Additional context / 附件

_No response_

The issue names no files, tests, or entry points. Start by locating the file-list upload UI and the existing upload-list actions; the work is complete when files can be dragged into the file list and each uploaded file has a copyable download address.

Written by the indexing model from the issue text.