Json2onnx

- If a file exceeds the 2 GB limit of the Protocol Buffer, the weight of the file is output to an external file.

What's Changed
* If a file exceeds the 2 GB limit of the Protocol Buffer, the weight of the file is output to an external file. by PINTO0309 in https://github.com/PINTO0309/json2onnx/pull/1

New Contributors
* PINTO0309 made their first contribution in https://github.com/PINTO0309/json2onnx/pull/1

**Full Changelog**: https://github.com/PINTO0309/json2onnx/compare/2.0.2...2.0.3

- Add short form

usage:
json2onnx [-h]
--ij INPUT_JSON_PATH
-of OUTPUT_ONNX_FILE_PATH

optional arguments:
-h, --help
show this help message and exit

-ij INPUT_JSON_PATH, --input_json_path INPUT_JSON_PATH
Input JSON file path (*.json)

-of OUTPUT_ONNX_FILE_PATH, --output_onnx_file_path OUTPUT_ONNX_FILE_PATH
Output ONNX model path (*.onnx)

- Security update
- README update

1. Added functionality to be called from Python scripts.
2. Added functionality to return ONNX object return values in onnx.ModelProto.
3. Docker support.

Init