请求增加对 Cloudflare R2 的支持

[BLxcwg666]

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

如题

Suggested solution / 实现思路

No response

Additional context / 附件

No response

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See

1. 52% #1214