bim.calculate_resource_quantity #5744

Added operator to calculate resource quantity based on the output products and the quantity Name.
See video demo - https://imgchest.com/p/9rydjlbmnyk

src/ifcopenshell-python/ifcopenshell/api/cost/calculate_cost_item_resource_value.py

@@ -101,6 +101,7 @@ def calculate_cost_item_resource_value(file: ifcopenshell.file, cost_item: ifcop
 
     for resource in resources:
         cost, unit = ifcopenshell.util.resource.get_cost(resource)
+        # TODO: cost is never None because get_cost always returns a float.
         if cost is None:
             # Concept to standardise - Not defined in schema, but this makes manual scheduling of resources 10x faster and less duplicate data.
             parent_cost = ifcopenshell.util.resource.get_parent_cost(resource)