Extend Cloud-Ressources Docs in regards to SCS HW Lab

We agreed in the project board to have the same workflow for requesting resources from the SCS HW Lab as we have for the GX SCS2 environment and wavestack. As such, we should document it accordingly in our docs.

https://docs.scs.community/community/cloud-resources/#how-to-request-cloud-resources

Probably while doing that, it makes sense to restructure there as well.
