ENH: Add Google Colab Model (currently available at BPSA)

[joaopauloschuler]

Add support for google colab models.
https://colab.research.google.com/github/googlecolab/colabtools/blob/main/notebooks/Getting_started_with_google_colab_ai.ipynb

The feature is currently available at BPSA:
https://github.com/joaopauloschuler/beyond-python-smolagents/