WIP: Add composer.json with basic GitLab-CI and GitHub Actions
Add composer.json, following best practices for TYPO3 Projects. Add GitLab-CI and GitHub Actions, to ensure composer.json is valid and install is possible.
Relates: #5, #6
Add composer.json, following best practices for TYPO3 Projects. Add GitLab-CI and GitHub Actions, to ensure composer.json is valid and install is possible.
Relates: #5, #6