Convert from docker-compose.yml to unRAID template

[csjoh]

Is your feature request related to a problem? Please describe.
Convert docker-compose.yml files to unRAID templates.

Describe the solution you'd like
Supply a docker-compose.yml file as input and get an unRAID template as output, that can be copied to an unRAID server and installed via their templating system.

Describe alternatives you've considered
Converting the docker-compose.yml files by hand. Tedious and error-prone as I'm not too familiar with Docker.

Additional context
The program already converts from unRAID templates to docker-compose.yml, so it knows the structures of both formats. In my limited understanding, it should be possible to reverse the operation and go the other way.