[acabarbaye]

Summary

• add project-level licensing helpers and CLI entry points to sync licence files and describe obligations
• validate configured single-licence project files before dependency compliance checks
• add tests, Jinja-based reporting, and news fragments for the new licensing workflows

Testing

• PYTEST_DISABLE_PLUGIN_AUTOLOAD=1 pytest -o addopts='' tests/licensing/test_sync_project_licence.py tests/licensing/test_describe_licence_obligations.py tests/licensing/test_describe_licence_obligations_cli.py tests/licensing/test_opensource_licences.py tests/spdx/test_check_licence_compliance.py tests/spdx/test_spdx_helper.py tests/spdx/test_spdx_project.py
• python -m compileall continuous_delivery_scripts\spdx_report\spdx_helpers.py continuous_delivery_scripts\spdx_report\project_licensing.py continuous_delivery_scripts\check_licence_compliance.py continuous_delivery_scripts\sync_project_licence.py continuous_delivery_scripts\describe_licence_obligations.py