Add scripts for importing prices and sale contract fees; update purchase fees script

- Implemented `import_prices.py` to import price index values from a CSV file with migration mapping.
- Created `import_sale_fees.py` for importing sale contract line fees, including detailed logging and error handling.
- Modified `import_purchase_fees.py` to change fee type from 'ordered' to 'budgeted' and added fee ID logging.

Reference Data/python_project/scripts/import_purchase_fees.py

@@ -38,6 +38,7 @@ SKIP_NON_SUPPLIERS = False   # Set to True to skip parties that aren't suppliers
 
 
 def import_purchase_contract_fees(csv_file):
+    
     """Import purchase contract line fees from CSV"""
     
     print(f"{'='*70}")
@@ -184,7 +185,7 @@ def import_purchase_contract_fees(csv_file):
 
                     # Set type if found and field exists
                     if mode and hasattr(fee, 'type'):
-                        fee.type = 'ordered'        # Assuming all imported fees are 'ordered'
+                        fee.type = 'budgeted'        # Assuming all imported fees are 'budgeted'
 
                     # Set weight_type if found and field exists
                     if mode and hasattr(fee, 'weight_type'):
@@ -212,6 +213,7 @@ def import_purchase_contract_fees(csv_file):
                     fee.save()
                     
                     print(f"  ✓ Fee created successfully")
+                    print(f"    Fee ID: {fee.id}") 
                     print(f"    Product: {product.rec_name}")
                     print(f"    Supplier: {supplier.rec_name}")
                     print(f"    Price: {price} {currency.code}")