refactor Trainer train/val loop

doc/index.md

@@ -0,0 +1,29 @@
+# `<project-name>` package docs 
+{ref}`genindex`
+{ref}`modindex`
+{ref}`search`
+
+```{eval-rst}
+.. autosummary::
+   :nosignatures:
+
+    # list modules here for quick links
+```
+
+```{toctree}
+:maxdepth: 3
+:caption: Autoref
+
+_autoref/<project-name>.rst
+```
+
+```{toctree}
+:maxdepth: 3
+:caption: Contents
+
+reference/documentation/index
+reference/site/index
+```
+
+```{include} ../README.md
+```