[Feature Request] Fortran API

### Describe the feature request

Hi, wondering if there could be any consideration for supporting a Fortran wrapper API? if such initiative would be of interest maybe one way to kick-start it would be by looking at tools such as: https://github.com/LLNL/shroud

### Describe scenario use case

Many HPC applications/engineering software run on large code bases written in Fortran. It would be very convenient to enable calling onnx directly within the language.

This would be very welcome by the Fortran community of developers.

Thanks

No source file, entry point, or test is named. Start by reviewing the existing ONNX Runtime APIs and the LLNL Shroud approach suggested in the issue; done means a supported Fortran wrapper API enables HPC and engineering applications to call ONNX Runtime directly.

Written by the indexing model from the issue text.