Built-in onnxruntime-extensions updates (#24892)
### Description
<!-- Describe your changes. -->
- Fix onnxruntime-extensions include path.
- Add option to onnxruntime_perf_test to register custom ops from a
built-in onnxruntime-extensions.
### 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. -->
Fix build.py `--use_extensions` option.
Make it simple to use the built-in onnxruntime-extensions with
onnxruntime_perf_test.
