Upload fixed & optimized fp16/q4f16 ONNX weights

onnx/decoder_model_merged_fp16.onnx

@@ -1,3 +1,3 @@
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+size 915094963

onnx/decoder_model_merged_q4f16.onnx

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:28125eb088192c7d29d328c99902899134d2c6498b7568d504c14883716913ff
-size 642447337
+oid sha256:b208afca1b23cc9aade0acc01731b96358ce9b2f20985060a5d8ffdb7cda3ebd
+size 336281436