feat(types): 调整安装增加费类型

types/src/interface/installation.ts

@@ -3,10 +3,10 @@ export interface IBaseFeeRule {
   code: string;
   rule: string;
   base: string;
-  feeRate: number;
-  labour: number;
-  material: number;
-  machine: number;
+  feeRate: number | null;
+  labour: number | null;
+  material: number | null;
+  machine: number | null;
 }
 
 // 费用章节