[QNN EP] Add qnn_version to build_and_package_info.py (#25229)
### Description
This makes the QAIRT/QNN version available in the Python client as `onnxruntime.capi.build_and_package_info.qnn_version`, similar to how it's already done for `cuda_version` and `rcom_version`.
### Motivation and Context
Users in some situations need to bring their own QAIRT/QNN SDK. In these cases, it is important to know the correct version to supply to ensure compatibility.