✅ CONTRIB-READY: Alternative Services Module

Major Changes:
- Removed ALL bluefly.io hardcoded references
- Made service URLs completely configurable
- Added proper Drupal contrib standards compliance

New Files for Contrib:
- composer.json (Drupal.org packaging)
- alternative_services.install (proper install hooks)
- alternative_services.permissions.yml (granular permissions)
- config/schema/alternative_services.schema.yml (config validation)
- config/optional/alternative_services.settings.yml (default config)
- Enhanced README.md with contrib documentation
- Comprehensive hook_help() implementation

Entity System:
- Full Drupal content entity with revisions/translations
- Proper access control and list builder
- Native Drupal forms and UI integration

Service Discovery:
- Docker/DDEV/Kubernetes discovery plugins
- Configurable service URL patterns
- Auto-import and health monitoring
- YAML configuration sync

Standards Compliance:
- ✅ No hardcoded site-specific URLs
- ✅ Proper permissions system
- ✅ Configuration schema validation
- ✅ Contrib-standard documentation
- ✅ Generic examples in tests
- ✅ Modular/pluggable architecture

Ready for drupal.org submission!