Reorganizing docs for pipeline restructure (#279)

* starting docs for pipelines

* working on an example

* clearing output

* starting to implement config changes and add documentation

* removing diff

* format

* templated pipeline notebook a bit

* black

docs/tutorials/data/index.rst

@@ -0,0 +1,11 @@
+Data Setup
+----------
+
+# TODO: high level summary
+
+.. toctree::
+    :maxdepth: 1
+
+    choosing_dataset.md
+    creating_dataset.md
+    custom_dataset_format.md