[DOC]: Create a how-to for running cuGraph with multiple GPU's

[acostadon]

Describe the future/missing documentation

Within the new doc pages, create a document that explains how-to run graph algorithms on MNMG.
Discuss:

• How to setup DASK on single node
• How to setup DASK on multiple nodes
• What are all the DASK parameters

Where have you looked?

https://docs.rapids.ai/api/cugraph/stable/api_docs/dask-cugraph.html
https://docs.rapids.ai/api/cugraph/stable/api_docs/helper_functions.html

[acostadon]

• Show how to set up both multi-gpu and multi-node-multi-GPU Explain scale
• Explain dask and link to the dask documentation
• Explain raft and its role, link to raft documentation
  and Link to datasets that are appropriate size to exploit multiple GPU
• Demonstrate and link to nvidia-smi usage.
• Show example of creating and using a multi-gpu cugraph.
• Explain running an algorithm, Link to available algorithms and API
• Explain compute and other dask specific functions.
• Link to functioning notebook in github
• Add links to cugraph mg API and relevant code/tests examples