[Models] Option for "Model Method" to capture protocol or publication

[aclayton555]

Emerges from #115 (specifically, working discussion on Sept 11, 2024)

In the "Model" schema, there is currently an attribute, "Model Method," with the description, "The term that describes the general method used to create the model."

Model in this context is referring to "Information about a non-human organism or any cell line from which experimental data is derived."

This reminds me of the NF Tool Central project...example: https://nf.synapse.org/Explore/Tools/DetailsPage/Details?resourceId=02dacc42-ea46-48fb-a4df-7a875d801086

I'm wondering if there additional attributes we want to pull into the Models schema and/or if the "Model Method" attribute could be expanded to include information of model development-related publications or linked protocols?