Adding instructions for using the parallel_backend="ray" default option

[xhluca]

It appears ray is now the default parallel backend:

AgentLab/main.py

Line 63 in 5d72e8b

parallel_backend="ray",

It is unclear how it's supposed to be used. It would be great to have instructions on using ray, as it seems a localhost server is needed.

[recursix]

I'll add some info, but it's supposed to be seamless. The dashboard is started automatically and is optional. if you go on the provided link you should see the dashboard. If you're remote, ssh tunnel should work, if not let me know

[xhluca]

i ran into issues that says the server is not running, so i'm not sure if i'm missing something. i didn't save the error message as i immediately changed to joblib. will share the error when i have some time

[recursix]

OK, let met know. I had a good experience with it so far and didn't had much to do on my side. @ThibaultLSDC , what's your experience with ray so far?