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/markdown.ts

@@ -0,0 +1,18 @@
+import { ReadFileByBufferParams, ReadFileResponse } from './type.d';
+import { initMarkdownText } from './utils';
+import { readFileRawText } from './rawText';
+
+export const readMarkdown = async (params: ReadFileByBufferParams): Promise<ReadFileResponse> => {
+  const { teamId, metadata } = params;
+  const { rawText: md } = readFileRawText(params);
+
+  const rawText = await initMarkdownText({
+    teamId,
+    md,
+    metadata
+  });
+
+  return {
+    rawText
+  };
+};