✨ refresh Cohere support

[maxbrunet]

Description

[ What changed? Feel free to be brief. ]

Hello! 👋

Made separate commits for ease of review:

• Refresh list of Cohere models
• Migrate to Cohere API v2
  • note: raw_prompting is no longer supported
• Add tool support to Cohere
• Add image support to Cohere

Documentations:

• An Overview of Cohere's Models — Cohere
• Chat — Cohere
• Chat with Streaming — Cohere
• A Guide to Streaming Responses — Cohere

Checklist

• I've read the contributing guide
• The relevant docs, if any, have been updated or created
• The relevant tests, if any, have been updated or created

Screenshots

[ For visual changes, include screenshots. Screen recordings are particularly helpful, and appreciated! ]

Tests

[ What tests were added or updated to ensure the changes work as expected? ]

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[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[maxbrunet]

I have read the CLA Document and I hereby sign the CLA

[recurseml]

⚠️ Only 5 files will be analyzed due to processing limits.

[recurseml]

✨ No issues found! Your code is sparkling clean! ✨

[sestinj]

Thanks for the refresh! And for adding the tests