feat: 添加download路由用于展示文档信息

- 添加/download/documentID路由用于文档下载
- server端添加文档元数据获取与下载API
- 将app中的types移至shared，与server共享

app/models/mappers/documentMapper.ts

@@ -23,6 +23,7 @@ export function toProductDocumentView(
 
   return {
     id: raw.id,
+    fileId: fileId,
     filename: file.filename_download,
     title: trans.title,
     url: url,
@@ -68,6 +69,7 @@ export function toDocumentListView(raw: ProductDocument): DocumentListView {
 
   return {
     id: raw.id,
+    fileId: fileId,
     filename: file.filename_download,
     title: trans.title,
     url: url,