Add docker compose deployment handler

I'd like to use the SSH deploy method, but deploy an entire docker compose file with potentially multiple containers. I can probably start adding this myself, but I want to ask where this would fit. Would you like an additional option in `image:`? Potentially something like `ssh-compose`? Or would you prefer an entirely new deployment handler?
I envision this process as follows:

1. Use subprocess to rsync-over-ssh the entire challenge folder to the remote server. Use the same slugify-d name as the directory name on the remote server.
2. SSH to the remote server and run `docker compose up -d` in the target directory. Let docker handle all the building/deploying on the remote server.

Empieza leyendo el método de despliegue SSH existente y la ruta de selección del handler detrás de image:; después, sigue los pasos del subproceso, rsync-over-SSH, la nomenclatura de directorios de slugify-d y docker compose up -d remoto descritos aquí. No se nombran archivos ni tests; se considera terminado cuando un handler o una opción acordados sincronizan toda la carpeta del challenge e inician remotamente el despliegue de Compose.

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