Add documentation for DatasetAdapter

[Louis-Dupont]

PR for Dataloader Adapter documentation.

The .md is generated from the notebook.

The notebook cannot be run automatically in tests because it requires user inputs.

[BloodAxe]

Pls update install instructions FROM

!pip install data-gradients==0.2.1 gwpy &> /dev/null
!pip install super-gradients==3.3.1 gwpy &> /dev/null
!pip freeze gwpy &> /dev/null

TO

!pip install -qq super-gradients==3.3.1

[BloodAxe]

This #1607 should be merged before current PR

[Louis-Dupont]

pip install ... changed in ff78e13

[BloodAxe]

Please update the installed version of SG to latest 3.4.1:

!pip install -q super-gradients==3.3.1

[BloodAxe]

LGTM