Fix: add component type check on add_component (#50)

Co-authored-by: Jietao Chen <chenjietao@dexforce.com>

Author: chase6305

embodichain/toolkits/urdf_assembly/urdf_assembly_manager.py

@@ -230,6 +230,11 @@ def add_component(
                 raise ValueError("component_type must be a string")
             if not isinstance(urdf_path, (str, Path)):
                 raise ValueError("urdf_path must be a string or Path")
+            if component_type not in self.SUPPORTED_COMPONENTS:
+                raise ValueError(
+                    f"Unsupported component_type: {component_type}. "
+                    f"Supported types: {self.SUPPORTED_COMPONENTS}"
+                )
 
             component = URDFComponent(
                 urdf_path=urdf_path, params=params, transform=transform