feat: add image zoom to improve image viewing experience (#20763)

Signed-off-by: reidliu41 <reid201711@gmail.com>

mkdocs.yaml

@@ -61,6 +61,7 @@ plugins:
   - search
   - autorefs
   - awesome-nav
+  - glightbox
   # For API reference generation
   - api-autonav:
       modules: ["vllm"]

requirements/docs.txt

@@ -4,6 +4,7 @@ mkdocs-material
 mkdocstrings-python
 mkdocs-gen-files
 mkdocs-awesome-nav
+mkdocs-glightbox
 python-markdown-math
 regex
 ruff