- Add button to generate cost schedule

- Feature to view, edit and add cost item values. ( Right Click - Edit ).

src/ifcopenshell-python/ifcopenshell/util/cost.py

@@ -245,6 +245,20 @@ def get_cost_item_assignments(
             for product in get_cost_assignments_by_type(nested_cost_item, filter_by_type)
         ]
 
+def get_cost_values(cost_item: ifcopenshell.entity_instance) -> list[dict[str, str]]:
+    results = []
+    for cost_value in cost_item.CostValues or []:
+        label = "{0:.2f}".format(calculate_applied_value(cost_item, cost_value))
+        label += " = {}".format(serialise_cost_value(cost_value))
+        results.append({
+            "id": cost_value.id(), 
+            "label": label, 
+            "name": cost_value.Name,
+            "category": cost_value.Category,
+            "applied_value": get_primitive_applied_value(cost_value.AppliedValue) if cost_value.AppliedValue else None,
+            })
+    print(results)
+    return results
 
 class CostValueUnserialiser:
     def parse(self, formula: str):