Add GitHub Actions workflow for PyPI publishing

[awvwgk]

Add workflow for publishing skala and microsoft-skala on PyPI.

[Copilot]

Pull request overview

This PR renames the Python package from microsoft-skala to skala and adds a GitHub Actions workflow to publish both packages to PyPI. The microsoft-skala package becomes a lightweight wrapper that depends on skala, enabling backward compatibility for existing users.

Changes:

• Renamed primary package from microsoft-skala to skala in pyproject.toml
• Added documentation and homepage URLs to package metadata
• Updated all README references to use the new skala package name
• Created GitHub Actions workflow for automated PyPI publishing with trusted publishing support
• Added wrapper package configuration for microsoft-skala that depends on skala

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
pyproject.toml	Changed package name to "skala" and added documentation/homepage URLs
README.md	Updated package name references and installation instructions throughout
.github/workflows/pypi/microsoft-skala.toml	New wrapper package configuration that declares skala as a dependency
.github/workflows/pypi.yml	New workflow for building and publishing both packages to PyPI using matrix strategy

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[awvwgk]

Merging after discussion with Maik @letmaik.