Update thing to do

TODO.md

@@ -8,11 +8,28 @@
 
 # /:path
 - ~~Override opengraph using banner image / thumbnail image~~
-- Render readme file
+- ~~Render readme file~~
 - ~~Copy folder url~~
 - ~~Copy file direct url~~
-- Download file url
-- Password protected
+- ~~Download file url~~
+- ~~Password protected~~
+- File Preview
+  - 3D > 3DPreview
+  - Audio > AudioPreview
+  - Archive > UnknownPreview
+  - RichText > MarkdownPreview
+  - OfficeWord > OfficePreview
+  - OfficeExcel > OfficePreview
+  - OfficePowerPoint > OfficePreview
+  - PDF > PDFPreview
+  - Database > UnknownPreview
+  - Image > ImagePreview
+  - Code > CodePreview
+  - Text > TextPreview
+  - Video > VideoPreview
+  - Font > UnknownPreview
+  - Default > UnknownPreview
+  - Binary > UnknownPreview
 
 # /download/:path
 - ~~Download file based on path~~