Implementing Unique Identifiers for Seamless Model Sharing

Currently, the model name is not unique and varies from user to user. For example, some users use "pathname/modelname". When these users share it with others, ComfyUI won't download the model automatically, requiring the receiver to make the change manually.

This issue could be solved by using a unique identifier, preferably in GitHub style: "username/reponame/modelname". The model would then download itself, saving a significant amount of time on manual downloads and path changes.