onnxruntime

Add Anubis metrics schema for local benchmark results uploading (#19018)

### Description
1. Add metrics.py for define the metrics schema used by Anubis
2. Add two examples (llama2 and whisper) of how to save local benchmark
results following Anubis metrics schema


### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

---------

Co-authored-by: Kyle Zhang <Xi.Zhang@microsoft.com>
Co-authored-by: ironman <bitzhangxi@outlook.com>