Feature: Initial extension skeleton 

Description 

Initial skeleton of the sbuerk/data-factory extension, providing the project setup the actual implementation is built on:

  • TYPO3 v12.4 and v13.4 support on PHP 8.1 up to 8.4 - PHP 8.1 for TYPO3 v12 only - with core version aware implementations below Core12/ and Core13/.
  • Dependency injection wiring through Configuration/Services.php, with services configured by Symfony dependency injection attributes on the classes themselves.
  • Container based tooling through Build/Scripts/runTests.sh covering linting, coding guidelines, static analysis, unit and functional tests and documentation rendering.
  • GitHub Actions workflows running these gates for TYPO3 v12 and v13 on pull requests.
  • A functional test setup ready to build on: strict PHPUnit configuration, an example fixture extension loaded by its composer package name, site based tests issuing frontend sub-requests in several languages, and repository tests running in a built frontend environment.
  • Developer documentation below docs/, covering the architecture, the quality gates, both test suites and the release workflow.