adds openai /responses and connectors api client

[Josephrp]

🔗 Related Issues

#245

📝 Description

solves #245 adds tool calling and connectors and websearch

🔄 Type of Change

• 🐛 Bug fix
• ✨ New feature
• 💥 Breaking change
• 📚 Documentation update
• 🧹 Code refactor
• ⚡ Performance improvement
• ✅ Test update

🧪 Tests

📋 Checklist

• Linting / type-checking / unit tests pass locally with my changes
• I've added tests that prove my fix is effective or that my feature works
• My code follows the style guidelines of this project
• I've made corresponding changes to the documentation
• My changes generate no new warnings

[thomashebrard]

I just noticed that the PR flow was not explicit in the CONTRIBUTING.md file. That's my bad.
The PR needs to be opened on the branch "dev". I'll make a quick fix of the CONTRIBUTING.md rules.
Also, i have made a comment on the issue related to this PR! :)