feat: support DeepSeek (#667)

### What problem does this PR solve?

#666 
feat: support DeepSeek
feat: preview word and excel

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/utils/api.ts

@@ -75,4 +75,5 @@ export default {
   getAllParentFolder: `${api_host}/file/all_parent_folder`,
   createFolder: `${api_host}/file/create`,
   connectFileToKnowledge: `${api_host}/file2document/convert`,
+  getFile: `${api_host}/file/get`,
 };

web/src/utils/registerServer.ts

@@ -1,3 +1,4 @@
+import omit from 'lodash/omit';
 import { RequestMethod } from 'umi-request';
 
 type Service<T extends string> = Record<T, (params: any) => any>;
@@ -10,6 +11,7 @@ const registerServer = <T extends string>(
   for (let key in opt) {
     server[key] = (params: any, urlAppendix?: string) => {
       let url = opt[key].url;
+      const requestOptions = opt[key];
       if (urlAppendix) {
         url = url + '/' + urlAppendix;
       }
@@ -22,6 +24,7 @@ const registerServer = <T extends string>(
 
       if (opt[key].method === 'get' || opt[key].method === 'GET') {
         return request.get(url, {
+          ...omit(requestOptions, ['method', 'url']),
           params,
         });
       }