Please explain the motivation behind the feature request.

Currently when using Puppeteer with goose I see:

─── puppeteer_screenshot | puppeteer ──────────────────────────
ERROR goose::agents::truncate: Error: Execution error: Image content is not supported by Bedrock provider yet
    at crates/goose/src/agents/truncate.rs:372

Describe the solution you'd like
Able to configure and use image models

Describe alternatives you've considered
Using LiteLLM to be able to make AWS Bedrock look like OpenAPI

Additional context
Add any other context or screenshots about the feature request here.

• I have verified this does not duplicate an existing feature request