Add usage and data documentation

Add weights/hami2_transformer_ar4.pt

Add weights/hami2_transformer_ar1.pt

Add weights/hami2_dit.pt

Add weights/hami2_ours.pt

Add weights/hami2_physiformer.pt

Add weights/hami1_ours.pt

Add weights/hami1_hgdpf.pt

Add weights/hami1_physiformer.pt

Keep datasets in the dataset repository

Add data/hamiballs1.h5

initial commit