feat: 采购申请表单添加部门自行采购会议纪要字段

- 新增 FILE_TYPE_MAP.deptSelfMeetingMinutes('140') 文件类型
- 添加 deptSelfMeetingMinutes 表单字段
- 部门自行采购且预算金额<2000 元时显示必填上传组件
- 新增 purchasingfiles.ts API 文件

src/api/purchase/purchasingfiles.ts

@@ -0,0 +1,35 @@
+/*
+ *    Copyright (c) 2018-2025, cyweb All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * Redistributions in binary form to reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * Neither the name of the pig4cloud.com developer nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ */
+
+import request from '/@/utils/request';
+
+/**
+ * 获取文件类型列表
+ */
+export function getFileTypes() {
+	return request({
+		url: '/purchase/purchasingfiles/file-types',
+		method: 'get'
+	});
+}
+
+/**
+ * 获取 140 部门自行采购会议纪要文件类型
+ */
+export function getDeptSelfMeetingFiletype() {
+	return '140';
+}