Adding datalist generator to tutorial (#1129)

Fixes # #1128

### Description
Providing notebook containing datalist generator for auto3dseg
AutoRunner tutorial

Signed-off-by: Udbhav Ram <ramu@mcmaster.ca>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: udiram

.gitignore

@@ -151,3 +151,4 @@ deployment/ray/mednist_classifier_start.py
 *.nii.gz
 3d_segmentation/out
 *.nsys-rep
+auto3dseg/notebooks/datalist.json

auto3dseg/README.md

@@ -62,7 +62,7 @@ To further demonstrate the capabilities of **Auto3DSeg**, [here](tasks/instance2
 
 ### 1. Run with Minimal Input using ```AutoRunner```
 
-The user needs to provide a data list (".json" file) for the new task and data root. A typical data list is as this [example](tasks/msd/Task05_Prostate/msd_task05_prostate_folds.json). After creating the data list, the user can create a simple "task.yaml" file (shown below) as the minimum input for **Auto3DSeg**.
+The user needs to provide a data list (".json" file) for the new task and data root. A typical data list is as this [example](tasks/msd/Task05_Prostate/msd_task05_prostate_folds.json). A sample datalist for an existing MSD formatted dataset can be created using [this notebook](notebooks/msd_datalist_generator.ipynb). After creating the data list, the user can create a simple "task.yaml" file (shown below) as the minimum input for **Auto3DSeg**.
 
 ```
 modality: CT