Add HPC compatible build

[Grufoony]

No description provided.

[Copilot]

Pull request overview

Adds an “HPC build” mode that disables architecture-specific/aggressive compiler optimizations and wires it through packaging/docs/CI to produce a more portable wheel artifact.

Changes:

• Add DSF_HPC_BUILD CMake option and propagate it from setup.py via env var.
• Update CI workflow to build standard + HPC variants and rename HPC wheel artifacts.
• Document the HPC variant installation/build steps in the README.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
setup.py	Reads DSF_HPC_BUILD env var and forwards -DDSF_HPC_BUILD=ON to CMake
CMakeLists.txt	Adds DSF_HPC_BUILD option and switches Release optimization flags accordingly
.github/workflows/pypi.yml	Builds a matrix of standard/hpc wheels and renames HPC wheels with _hpc suffix
README.md	Adds documentation for HPC wheel variant and local HPC builds

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.27%. Comparing base (d93e300) to head (92fd66d).

Additional details and impacted files

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  Coverage   87.27%   87.27%           
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  Files          52       52           
  Lines        6461     6461           
  Branches      717      717           
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  Hits         5639     5639           
  Misses        803      803           
  Partials       19       19           

Flag	Coverage Δ
unittests	87.27% <ø> (ø)

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