- remove separate directories for versions 14, 14-rootless, and 14.0.2-rootless
- consolidate configuration into a single 14.0.2 directory
- add rootless mode as a selectable option in the data.yml form
- update docker-compose.yml to use dynamic image selection based on rootless mode
- add init.sh and upgrade.sh scripts to handle rootless mode setup and image selection
- update volume paths to support both root and rootless container modes
- change environment variable prefixes from lowercase 'forgejo__' to uppercase 'FORGEJO__' for consistency
- apply change across all forgejo docker-compose files (14-rootless, 14.0.2-rootless, 14.0.2, 14)