Optional GPU host requirement does not work with docker compose.

When setting `"host_requirements": {"gpu": "optional"}`, the override adds the capability without the `driver` and `count` sections.

```bash
[2024-06-12T18:58:55.598Z] Stop (1970 ms): Run: docker build -f /tmp/devcontainercli-rmelancon/updateUID.Dockerfile-0.62.0 -t vsc-booster-ai-8960dda54929ced7aedbc1d531258379f1613874a876c5691c3e0f3082d263f1-uid --platform linux/amd64 --build-arg BASE_IMAGE=booster-ai-devcontainer:latest --build-arg REMOTE_USER=nonRootUser --build-arg NEW_UID=1000 --build-arg NEW_GID=1000 --build-arg IMAGE_USER=root /tmp/devcontainercli-rmelancon/empty-folder
[2024-06-12T18:58:55.599Z] Start: Run: docker info -f {{.Runtimes.nvidia}}
[2024-06-12T18:58:55.691Z] Stop (92 ms): Run: docker info -f {{.Runtimes.nvidia}}
[2024-06-12T18:58:55.692Z] Docker Compose override file for creating container:
services:
'devcontainer':
image: vsc-booster-ai-8960dda54929ced7aedbc1d531258379f1613874a876c5691c3e0f3082d263f1-uid
entrypoint: ["/bin/sh", "-c", "echo Container started\n
trap \"exit 0\" 15\n
/usr/local/share/docker-init.sh\n
exec \"$$@\"\n
while sleep 1 & wait $$!; do :; done", "-"]
environment:
- IS_INSIDE_DEVCONTAINER=true
labels:
- 'devcontainer.local_folder=\\wsl.localhost\Ubuntu-22.04\home\rmelancon\repositories\Booster-AI'
- 'devcontainer.config_file=/home/rmelancon/repositories/Booster-AI/.devcontainer/devcontainer.json'
volumes:
- /var/run/docker.sock:/var/run/docker-host.sock
- profile:/root
- /root/.vscode-server
- vscode:/vscode
deploy:
resources:
reservations:
devices:
- capabilities: [gpu]
volumes:

profile:

vscode:
external: true
```

This results in the gpu not being available in the container.