upload onnx file

Chinese-CLIP Model Deployment: ONNX

those Onnx file is converted using this [script](https://github.com/OFA-Sys/Chinese-CLIP/blob/master/deployment_En.md)
you will likely to encounter this Error while converting:
```
Exporting the operator 'aten::unflatten' to ONNX opset version 13 is not supported.
```
so I uploaded those converted file for your convenience.
中文CLIP模型 [OFA-Sys/Chinese-CLIP](https://github.com/OFA-Sys/Chinese-CLIP)

.gitattributes

@@ -33,3 +33,5 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+vit-b-16.img.fp16.onnx.extra_file filter=lfs diff=lfs merge=lfs -text
+vit-b-16.txt.fp16.onnx.extra_file filter=lfs diff=lfs merge=lfs -text

vit-b-16.img.fp16.onnx

@@ -0,0 +1,3 @@
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+oid sha256:2a26f4fa948071b8fac2f8e63c87d8f798238e5e618eeee55621fdaf166541c5
+size 3770126

vit-b-16.img.fp16.onnx.extra_file

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:41ca7f726a18f3dcd678178c5fe4effbb6036fafd6743742112d9ee797ea54cf
+size 172386816

vit-b-16.img.fp32.onnx

@@ -0,0 +1,3 @@
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+oid sha256:910f10f2a33b40f052c6e12288c7b42b09c778c92dfe3bcaad9c220423b03d6a
+size 348531134

vit-b-16.txt.fp16.onnx

@@ -0,0 +1,3 @@
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+oid sha256:31cde86ac026826e46b65a2cac931ccc9d387f53a881c776b3bb15e5b2460cd5
+size 2284232

vit-b-16.txt.fp16.onnx.extra_file

@@ -0,0 +1,3 @@
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+oid sha256:42cafb2217d7cba53b23f51ff4deacad4a322c120c4e32b5a4630dd5c83767a2
+size 204140544

vit-b-16.txt.fp32.onnx

@@ -0,0 +1,3 @@
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+oid sha256:806193b6cb1501844c7ea6835572ce6cff0e0510e0aa80656152c9bd34637c6e
+size 410549277