[Feature] Test SLURM cluster in continuous integration

[jan-janssen]

Others already developed the actions to setup a SLURM cluster:
https://github.com/koesterlab/setup-slurm-action

[liamhuber]

It was on my todo list to poke around how you handle this/see what tools are available. This looks super promising!

[jan-janssen]

I created a short test case in https://github.com/jan-janssen/executorlib-slurm-ci/