Break down environments and put them in separate git branches.

[betolink]

Right now we have a single environment for all the tutorials and it works but it's not the best practice. We should create a branch for each tutorial, say for SNOWEX there would be a git branch called binder-snowex with only the binder directory and the dependencies needed for that specific tutorial. Same with the others. Another advantage of this is that commits to main that don't interfere with the environment won't trigger a new build for Binder.

[asteiker]

CRYO-198