Initial ROS 2 Humble Docker Workspace

✅ Docker-based ROS 2 Humble setup for Manjaro Linux

✅ GPU passthrough support (tested on NVIDIA RTX 4060)

✅ Workspace mount and reproducible container config via docker-compose.yml

✅ VS Code integration with terminal profiles and tasks

✅ Turtlesim demo and basic ROS 2 node execution

✅ Apache-2.0 license and structured README with setup guide