Generate a Spring Boot 3.4.5 project skeleton with PostgreSQL, Redis, MongoDB, and Docker Compose.

• Scaffolds a Maven-based Spring Boot project with Java 21, including Lombok, Spring Data JPA, Spring Web, caching, and validation dependencies
• Pre-configures application.properties with connection details for PostgreSQL, Redis, and MongoDB, plus SpringDoc OpenAPI for API documentation
• Generates a docker-compose.yaml file with Redis 6, PostgreSQL 17, and MongoDB 8 services, each with persistent volumes and default credentials
• Adds ArchUnit for architecture testing and springdoc-openapi for Swagger UI integration out of the box
• Requires Java 21, Docker, and Docker Compose installed locally; customizable project name and Spring Boot version via template parameters