GitLab

- Add '.jpeg' to the list of supported image extensions in app.py and read_api.py
- Update projects READMEs to indicate that web_demo is deprecated

- Comment out PaddlePaddle GPU installation in Dockerfile
- Add OCR model download URL in download_models.py
- Update config version in magic-pdf.json
- Remove outdated information and simplify README.md
- Remove volume creation for PaddleOCR models in Dockerfile

- Comment out LayoutLMv3, TableMaster, and StructEqTable models
- Update MFR model path to unimernet_hf_small_2503- Remove unused import in Unimernet.py

Also add some documentation.

- Update PyPI mirror from Tsinghua to Aliyun in multiple Dockerfiles and installation scripts
- This change may improve package download speed and reliability for users in China

Add the web_api project to the lists of projects in both the English and Chinese
README.md files, providing a brief description and linking to the project's
documentation. Ensure that the formatting and style are consistent with the
existing project entries.

* feat: mineru_web

* fix: mineru_web

* fix: mineru_web