建议支持s3访问（alist作为s3服务）

Please make sure of the following things

• I have read the documentation.
• I'm sure there are no duplicate issues or discussions.
• 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

建议在webdav之外，支持s3访问（alist作为s3服务）。
webdav协议现在不如s3协议支持广泛（支持s3可以串联restic备份工具/docker registry等）。
另外，许多网盘的功能支持也只有s3水平（不支持webdav的复制等）。

Suggested solution / 实现思路

No response

Additional context / 附件

No response

[xhofe]

related refer:

• serve s3: let rclone act as an S3 compatible server serving any backend rclone/rclone#3382
• serve: add s3 server rclone/rclone#6461

[Kuingsmile]

Support

[itsHenry35]

Rclone has had this feature done: rclone/rclone@23abac2
Dependency available: https://github.com/johannesboyne/gofakes3