Upload fixed & optimized fp16/q4f16 ONNX weights

onnx/decoder_model_merged_fp16.onnx

@@ -1,3 +1,3 @@
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+size 308097380

onnx/decoder_model_merged_q4f16.onnx

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:27dfacf79fb993bb159d986cf31968e7505db6394fc73d641101c2f3d5d26726
-size 281746035
+oid sha256:2f2ab89d085805d52d80062b7751bd63d0b5fbf9c53d0ead111f458633764742
+size 145337486