feat: add densenet_onnx model

[gaius-qi]

No description provided.

[github-actions]

⚠️ Possible file(s) that should be tracked in LFS detected ⚠️

    The following file(s) exceeds the file size limit: 524288 bytes, as set in the .yml configuration files:

    examples/model_repository/densenet_onnx/1/model.onnx

    Consider using git-lfs to manage large files.

[github-actions]

⚠️ Possible file(s) that should be tracked in LFS detected ⚠️

    The following file(s) exceeds the file size limit: 524288 bytes, as set in the .yml configuration files:

    examples/model_repository/densenet_onnx/1/model.onnx

    Consider using git-lfs to manage large files.

[github-actions]

⚠️ Possible file(s) that should be tracked in LFS detected ⚠️

    The following file(s) exceeds the file size limit: 524288 bytes, as set in the .yml configuration files:

    examples/model_repository/densenet_onnx/1/model.onnx

    Consider using git-lfs to manage large files.

[github-actions]

⚠️ Possible file(s) that should be tracked in LFS detected ⚠️

    The following file(s) exceeds the file size limit: 1048576 bytes, as set in the .yml configuration files:

    examples/model_repository/densenet_onnx/1/model.onnx

    Consider using git-lfs to manage large files.

[github-actions]

⚠️ Possible file(s) that should be tracked in LFS detected ⚠️

    The following file(s) exceeds the file size limit: 1048576 bytes, as set in the .yml configuration files:

    examples/model_repository/densenet_onnx/1/model.onnx

    Consider using git-lfs to manage large files.

[MinH-09]

LGTM