feat: add BIP upload module for order processing

Add BIPUploadModule to process product orders and generate BIP upload format:
- Read order data from [产品订单] worksheet
- Extract BOM using existing BomExtractor and ProductModelParser
- Output to [BIP上传模板] with formatted fields:
  - Source document number, product code, quantity
  - Line number (base 7000 + index)
  - Material code (66 code from BOM)
  - Supply method, required date, issue organization
  - Planned outbound quantity, remarks for errors

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

VBA/vba_metadata.json

@@ -36,6 +36,12 @@
       "type": "ClassModules",
       "attributes": {},
       "file": "ClassModules\\ProductModelParser.cls"
+    },
+    "BIPUploadModule.bas": {
+      "name": "BIPUploadModule",
+      "type": "Modules",
+      "attributes": {},
+      "file": "Modules\\BIPUploadModule.bas"
     }
   }
 }