model/file_info library

1. tencent_cloud_whiteboard package
2. documentation
3. model/file_info.dart

tencent_cloud_whiteboard package

1. Libraries
2. model/bord_info/board_info
3. model/file_info
4. model/media_info/media_info
5. tencent_cloud_whiteboard
6. tencent_cloud_whiteboard_brush_panel
7. tencent_cloud_whiteboard_controller
8. tencent_cloud_whiteboard_tools