Sbi4onnx

- Retention of metadata_props

What's Changed
* Retention of metadata_props by PINTO0309 in https://github.com/PINTO0309/sbi4onnx/pull/4


**Full Changelog**: https://github.com/PINTO0309/sbi4onnx/compare/1.0.6...1.0.7

1. Fix to preserve `domain` and `ir_version`.
2. API specification changes due to the version upgrade of onnx are now supported. `onnx==1.16.0`

What's Changed
* Fix to preserve domain and ir_version by PINTO0309 in https://github.com/PINTO0309/sbi4onnx/pull/3


**Full Changelog**: https://github.com/PINTO0309/sbi4onnx/compare/1.0.5...1.0.6

- `--disable_onnxsim` Suppress the execution of onnxsim on the backend and dare to leave redundant processing.

What's Changed
* `--disable_onnxsim` Suppress the execution of onnxsim on the backend and dare to leave redundant processing by PINTO0309 in https://github.com/PINTO0309/sbi4onnx/pull/2

New Contributors
* PINTO0309 made their first contribution in https://github.com/PINTO0309/sbi4onnx/pull/2

**Full Changelog**: https://github.com/PINTO0309/sbi4onnx/compare/1.0.4...1.0.5

- Add short form

$ sbi4onnx -h

usage:
sbi4onnx [-h]
-if INPUT_ONNX_FILE_PATH
-of OUTPUT_ONNX_FILE_PATH
-ics INITIALIZATION_CHARACTER_STRING
[-n]

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

-if INPUT_ONNX_FILE_PATH, --input_onnx_file_path INPUT_ONNX_FILE_PATH
Input onnx file path.

-of OUTPUT_ONNX_FILE_PATH, --output_onnx_file_path OUTPUT_ONNX_FILE_PATH
Output onnx file path.

-ics INITIALIZATION_CHARACTER_STRING, --initialization_character_string INITIALIZATION_CHARACTER_STRING
String to initialize batch size. "-1" or "N" or "xxx", etc...
Default: '-1'

-n, --non_verbose
Do not show all information logs. Only error logs are displayed.

- Security update
- README update

- Added model structure optimization process
- onnx-simplifier https://github.com/daquexian/onnx-simplifier