Automatically Start cuGraph Comms #288
Description
cuGraph comms initialization should be encapsulated in a single function. This function should be called upon usage of cuGraph-PyG, similar to how this draft PR initializes WholeGraph comms: https://github.com/pyg-team/pytorch_geometric/pull/9714/files#diff-7e1460f9e381c1535b6b23897da00f531a6a1d87f1ae47560a4fb1c0e6bf0ec6
We should also make WholeGraph comms initialization follow a similar approach.
Examples should be updated as well.