[Awaiting approval] Upload ONNX weights

[Automated] Converted using [Optimum](https://github.com/huggingface/optimum). Models will be merged manually by @Xenova once they have been checked with [Transformers.js](https://github.com/xenova/transformers.js).

onnx/prompt_encoder_mask_decoder.onnx

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+size 480338

onnx/vision_encoder.onnx

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+size 315405