[FEATURE] Add support for AI21 via the ai21 Python SDK

[the-praxs]

📥 Pull Request

📘 Description
Adds support for the AI21 models (ai21 >= 2.0.0) via their Python SDK with examples.

🔄 Related Issue (if applicable)
#372

🎯 Goal
Extend the functionality of AgentOps to support AI21 models.

🔍 Additional Context
AI21's Task-Specific Models has a Contextual Answer capability which is currently saved as an ActionEvent.

🧪 Testing
Tested using the provided file.

[the-praxs]

@bboynton97 @siyangqiu @HowieG @areibman this is ready for review!

[gitguardian]

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GitGuardian id	GitGuardian status	Secret	Commit	Filename
10824647	Triggered	Generic High Entropy Secret	33e27fe	docs/mint.json	View secret

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[the-praxs]

@areibman @bboynton97 can you guys review this?