Include docs for running on a cluster

[trevorb1]

Type of documentation issue

Missing Information

Issue Description

I propose adding a brief section on how to run pypsa-usa on a cluster. Im not suggesting this be a "How to use an HPC" guide or anything. But just instructions like:

1. Fill in cluster details at config/config.cluster.yaml
2. Run run_slurm.sh if using SLURM
3. Modify resource allocations in rules if required

Moreover, the cluster I use does not allow conda. As someone who does not have much HPC experience, navigating how to run pypsa-usa without conda has been a bit of a nightmare. We may want to add some notes on that; or this may resolve itself if we convert to UV for package management (as outlined here)

Link to existing documentation

na

Suggested Update

na

Additional Info

na

[trevorb1]

Oh. I didnt realize this already existed in the docs here. My bad.