[DOC]: Document steps to support additional NetworkX algorithm in nx-cugraph.

[acostadon]

How would you describe the priority of this documentation request

Medium

Describe the future/missing documentation

Explaining the process to future cuGraph developers both in-house and in networkX community will allow coverage to increase.

Where have you looked?

https://github.com/rapidsai/cugraph/tree/branch-24.04/python/nx-cugraph

Code of Conduct

• [X] I agree to follow cuGraph's Code of Conduct
• [X] I have searched the open documentation issues and have found no duplicates for this bug report