Add slurm profile to repository that works with Snakemake version in the conda environment

[verku]

Many clusters are using slurm. The slurm profile is continuously being updated and will at some point not work anymore with the Snakemake version the pipeline is using.
Add a folder with a slurm profile to the repository that works on Rackham, and point the users to that instead of using cookiecutter to set up the profile themselves. Users of other clusters can then manually edit the profile/config.yaml file.