Add 5-fold ensemble member 4 (regression, 512px, APTOS 5-fold CV)

Add 5-fold ensemble member 3 (regression, 512px, APTOS 5-fold CV)

Add 5-fold ensemble member 2 (regression, 512px, APTOS 5-fold CV)

Add 5-fold ensemble member 1 (regression, 512px, APTOS 5-fold CV)

Add 5-fold ensemble member 0 (regression, 512px, APTOS 5-fold CV)

Upload released checkpoint (regression loss), ONNX export, and model card

initial commit