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

projects/app/data/config.json

@@ -82,7 +82,7 @@
       "name": "Embedding-2",
       "avatar": "/imgs/model/openai.svg",
       "charsPointsPrice": 0,
-      "defaultToken": 700,
+      "defaultToken": 512,
       "maxToken": 3000,
       "weight": 100,
       "dbConfig": {},