[Python] Convert Pydantic Model to Arrow Schema (#291)

Provide utility to automatically convert Pydantic model to Arrow Schema

Closes #256

docs/src/python/python.md

@@ -47,6 +47,17 @@ pip install lancedb
 ## Utilities
 
 ::: lancedb.schema.schema_to_dict
+
 ::: lancedb.schema.dict_to_schema
+
 ::: lancedb.vector
 
+## Integrations
+
+### Pydantic
+
+::: lancedb.pydantic.pydantic_to_schema
+
+::: lancedb.pydantic.vector
+
+