add nan model

add model trained with the data from this corpus https://arkindex.teklia.com/browse/d30553bd-2756-4df1-90fd-dff3d25da8c5?top_level=true&folder=true&order=name&order_direction=asc and the data from the 200 pages annotated by nan from this folder https://demo.arkindex.org/browse/6cf5c5a6-d333-40ed-a9b8-71f268751964?top_level=true&folder=true&order=name&order_direction=asc

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information