Deprecate Gemini 1.0 Pro Vision

[thatfiredev]

According to https://ai.google.dev/gemini-api/docs/models/gemini#model-variations the Gemini 1.0 Pro Vision model is deprecated.

Is there a way of deprecating models in Genkit ?

[pr-Mais]

Could do it in 2 ways:

• Add a JSDoc @deprecated flag.
• Also show a warning in the console when the model is called (I think this can be added as a middleware internally?).