Integrate Vercel AI Gateway as optional

[XahidEx]

Integrate Vercel AI Gateway to perform the same task we currently do with the OpenAI SDK. (So that we have choices to change the model).

[sambecker]

What steps would you take to use the AI Gateway? Would you use a Vercel API Key, a provider key, OIDC?

Would be helpful to have complete steps for how the gateway would be configured.

[XahidEx]

What steps would you take to use the AI Gateway? Would you use a Vercel API Key, a provider key, OIDC?

Would be helpful to have complete steps for how the gateway would be configured.

Vercel API Key. So that I can choose any model.
VERCEL_API_KEY’, VERCEL_AI_MODEL’