feat(inventorystock): 添加表格选择功能

- 在表格中增加复选框列用于多选操作
- 设置居中对齐样式提升用户体验
- 配置固定宽度确保界面布局一致性

src/views/modules/partspare/inventorystock.vue

@@ -141,6 +141,12 @@
       @selection-change="handleSelectionChange"
       :row-style="controlRowStyle"
       style="width: 100%;">
+      <el-table-column
+        type="selection"
+        header-align="center"
+        align="center"
+        width="50">
+      </el-table-column>
       <el-table-column
         v-for="(item,index) in arrayPart" :key="index"
         :sortable="item.columnSortable"