Support FLOAT4E2M1

[titaiwangms]

Incoming ONNX IR version 11 adds FLOAT4E2M1 (https://github.com/onnx/onnx/wiki/Logistics-for-ONNX-Release-1.18.0)

[github-actions]

This issue has been automatically marked as stale due to inactivity and will be closed in 30 days if no further activity occurs. If further support is needed, please provide an update and/or more details.

[snnn]

This issue has been automatically closed as 'not planned' because it has been marked as 'stale' for more than 30 days without activity. If you believe this is still an issue, please feel free to reopen it.