Feat: pptx and xlsx loader (#1118)

* perf: plan tip

* perf: upload size controller

* feat: add image ttl index

* feat: new upload file ux

* remove file

* feat: support read pptx

* feat: support xlsx

* fix: rerank docker flie

packages/service/common/file/read/utils.ts

@@ -0,0 +1,25 @@
+import { markdownProcess } from '@fastgpt/global/common/string/markdown';
+import { uploadMongoImg } from '../image/controller';
+import { MongoImageTypeEnum } from '@fastgpt/global/common/file/image/constants';
+import { addHours } from 'date-fns';
+
+export const initMarkdownText = ({
+  teamId,
+  md,
+  metadata
+}: {
+  md: string;
+  teamId: string;
+  metadata?: Record<string, any>;
+}) =>
+  markdownProcess({
+    rawText: md,
+    uploadImgController: (base64Img) =>
+      uploadMongoImg({
+        type: MongoImageTypeEnum.collectionImage,
+        base64Img,
+        teamId,
+        metadata,
+        expiredTime: addHours(new Date(), 2)
+      })
+  });