Replace make dist with python -m build in PyPI workflow

[Copilot]

The PyPI release workflow referenced a non-existent make dist command. The repository has no Makefile and uses pyproject.toml with setuptools for package configuration.

Changes:

• Replace make dist with python -m build (standard Python packaging tool)
• Add build package to pip dependencies, ordered before twine
• Fix tarball filename pattern from deeplabcut-live-*.tar.gz to deeplabcut_live-*.tar.gz to match actual build output

- name: Install dependencies
  run: |
    pip install --upgrade pip
    pip install wheel
    pip install "packaging>=24.2"
    pip install build
    pip install twine

- name: Build and publish to PyPI
  run: |
    python -m build
    ls dist/
    tar tvf dist/deeplabcut_live-*.tar.gz
    python3 -m twine upload --verbose dist/*

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