refactor: rewrite document-type management for new backend API

- API client: switch from /api/v3/document-types to /api/document-types,
  replace group_ids with ruleSetIds, add getEntryModules/getRuleSets
- List page: simplified to code/name/entry_module/rule_sets/status columns
- New/Edit page: code + name + description + entry_module dropdown +
  rule_set multi-select checklist
- Fix DocumentType type import collision in documents.ts

app/api/files/documents.ts

@@ -2,7 +2,7 @@ import { postgrestGet, postgrestDelete, postgrestPut, postgrestPost } from '../p
 import { getDocumentTypes } from '../document-types/document-types';
 import { formatDate } from '../../utils';
 import { API_BASE_URL } from '~/config/api-config';
-import type { DocumentType } from './files-upload';
+import type { DocumentType } from '../document-types/document-types';
 
 /**
  * 从不同格式的 API 响应中提取数据