feat: added verbose flag to suppress print statements

[PeriniM]

Added possibility to suppress print statements by setting the verbose flag to False on the graph configuration.
Usage case:

graph_config = {
    "llm": {
        "api_key": openai_key,
        "model": "gpt-3.5-turbo",
    },
    "verbose":True,
}

[github-actions]

🎉 This PR is included in version 0.5.0-beta.6 🎉

The release is available on:

• v0.5.0-beta.6
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 0.5.0 🎉

The release is available on:

• v0.5.0
• GitHub release

Your semantic-release bot 📦🚀