Add PyTorch 2.14 to the build (#2093)

## What?
NIXL EP must be built with upcoming PyTorch 2.14 support


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## Summary by CodeRabbit

* **New Features**
  * Added support for building wheels compatible with Torch 2.14.
  * Existing Torch 2.11, 2.12, and 2.13 wheel builds remain supported.
* Nightly wheel builds now automatically select compatible Torch
versions based on the CUDA version.
  * Explicit Torch version selections continue to be supported.

* **Documentation**
* Updated build guidance to explain automatic Torch version selection
and version overrides.
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Signed-off-by: Ovidiu Mara <ovidium@nvidia.com>