add v5 midi onnx model

Signed-off-by: daquexian <daquexian566@gmail.com>

.gitattributes

@@ -34,3 +34,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 *.fr filter=lfs diff=lfs merge=lfs -text
+*.data filter=lfs diff=lfs merge=lfs -text

RWKV-5-MIDI-560M-v1-20230902-ctx4096-sim.onnx

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:127b337579b37a7c35158aa43ba40182a2c1532ff3cf2706d1b8d749d2cb1ffe
+size 1014134

RWKV-5-MIDI-560M-v1-20230902-ctx4096-sim.onnx.data

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1d191db368430890aa95661409fa770fc6887722ef4f4d75f462eca2905017a3
+size 2358515712