Feat: add context for figure and table (#11547)

### What problem does this PR solve?

Add context for figure table.



![demo_figure_table_context](https://github.com/user-attachments/assets/61b37fac-e22e-40a4-9665-9396c7b4103e)


`==================()` for demonstrating purpose. 
### Type of change

- [x] New Feature (non-breaking change which adds functionality)

test/testcases/configs.py

@@ -42,6 +42,8 @@ DEFAULT_PARSER_CONFIG = {
     "auto_keywords": 0,
     "auto_questions": 0,
     "html4excel": False,
+    "image_context_size": 0,
+    "table_context_size": 0,
     "topn_tags": 3,
     "raptor": {
         "use_raptor": True,
@@ -62,4 +64,4 @@ DEFAULT_PARSER_CONFIG = {
         ],
         "method": "light",
     },
-}
+}