feat: [numbering] 재고생산(stock_production) 문서유형 추가

- NumberingRule 모델에 DOC_STOCK_PRODUCTION 상수 추가
- documentTypes()에 '재고생산' 추가

app/Models/NumberingRule.php

@@ -39,6 +39,8 @@ class NumberingRule extends Model
 
     const DOC_MATERIAL_RECEIPT = 'material_receipt';
 
+    const DOC_STOCK_PRODUCTION = 'stock_production';
+
     public static function documentTypes(): array
     {
         return [
@@ -47,6 +49,7 @@ public static function documentTypes(): array
             self::DOC_SALE => '매출',
             self::DOC_WORK_ORDER => '작업지시',
             self::DOC_MATERIAL_RECEIPT => '원자재수입검사',
+            self::DOC_STOCK_PRODUCTION => '재고생산',
         ];
     }