Create k562_config.json

cell_type_configs/k562_config.json

@@ -0,0 +1,5 @@
+{
+    "cell_type": "K562", 
+    "weights_file": "K562_best_model_test1_val2.safetensors",
+    "description": "Weights trained on K562 cell line data"
+}