🔗 docs(README): add Alibaba Cloud partner and make all logos clickable

- Add Alibaba Cloud as new trusted partner with logo and link
- Make all partner logos clickable with respective website links:
  * Cherry Studio → https://www.cherry-ai.com/
  * Peking University → https://bda.pku.edu.cn/
  * UCloud → https://www.compshare.cn/?ytag=GPU_yy_gh_newapi
  * Alibaba Cloud → https://bailian.console.aliyun.com/
- Expand partner table from 3 to 4 columns
- Maintain consistent 60px logo height across all partners
- Apply changes to both Chinese and English README versions
- All links open in new tabs for better user experience

The partners section now provides direct access to all partner websites
while showcasing an expanded ecosystem of trusted collaborators.

docs/images/aliyun.svg

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