etils example fails to load on public colab due to missing mediapy dependency

[gcr]

running the example colab out of the box on the public instance of Google Colab (colab.research.google.com) immediately fails with:

[/usr/local/lib/python3.10/dist-packages/etils/ecolab/array_as_img.py](https://localhost:8080/#) in <module>
     37   import IPython
     38   import IPython.display
---> 39   import mediapy as media
     40   # pylint: enable=g-import-not-at-top
     41 

ModuleNotFoundError: No module named 'mediapy'

Each etils sub-modules require deps to be installed separately (e.g. `from etils import ecolab` -> `pip install etils[ecolab]`)

[gcr]

on public colab, the correct incantation is:

!pip -q install mediapy
from etils.lazy_imports import *

[Conchylicultor]

Thank you for reporting, sending a fix