[onnxruntime/build] Add new flag enable_generic_interface to build primary EPs by default (#23342)
### Description
- Add new build flag in build.py to build onnxruntime.dll supporting
interfaces for all primary EPs( QNN, TensoRT, OpenVino, VitisAI).
- Modify onnxruntime.dll/onnxruntime_shared.dll build settings to remove
dependency of IHV SDK Toolset to be installed on the system.
- Change CMake variables to be explicit when building EP vs ORT. e.g.
onnxruntime_USE_TENSORRT vs onnxruntime_USE_TENSORRT_INTERFACE, to
evolve the build system to build ORT independent of EPs.
### Motivation and Context
Changes in the build system required to evolve the repo to build the
components independently while removing unnecessary dependencies
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Co-authored-by: Lei Cao <jslhcl@gmail.com>
Co-authored-by: Karim Vadsariya <kvadsariya@microsoft.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>