请求支持分片上传 Request for support for multipart upload

[axyn45]

Please make sure of the following things

• [X] I have read the documentation.
• [X] I'm sure there are no duplicate issues or discussions.
• [X] I'm sure this feature is not implemented.
• [X] I'm sure it's a reasonable and popular requirement.

Description of the feature / 需求描述

我的Alist站点套了阿里云的全站加速，而所有阿里云的CDN产品POST上传文件大小都被限制在了300M无法更改，这会导致在上传大文件的时候加速节点直接返回413，而且大文件上传很容易受到网络波动的影响，因此建议添加分片上传到Alist服务端的功能。 #5176 有提到同样的request和类似的use case，但是题主似乎主动关闭了。个人认为还是挺有必要的一个功能。

Suggested solution / 实现思路

本人没有相关领域或者Golang开发经验，提供一些可能有用的帖子仅供参考。

• File Upload in Go with multipart/form-data
• How to Multipart File Upload Using FormData with HTML
• Example of doing a multipart upload in Go (golang)
• POST data using the Content-Type multipart/form-data

Additional context / 附件

已经确认是CDN节点返回的，因此没有提供log。

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[yyyytawa]

+1 希望能像cloudreve一样可以不需要占用大量内存直接分片上传

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This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

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