[gnome-builder/wip/gtk4-port] plugins/beautifier: add TODO for porting/rewrite

[Christian Hergert <chergert src gnome org>]

commit 1e191413aea48101d641f40fa88c35617eae48f3
Author: Christian Hergert <chergert redhat com>
Date:   Mon Apr 18 14:50:34 2022 -0700

    plugins/beautifier: add TODO for porting/rewrite

 src/plugins/beautifier/TODO.md | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/plugins/beautifier/TODO.md b/src/plugins/beautifier/TODO.md
new file mode 100644
index 000000000..f084dac25
--- /dev/null
+++ b/src/plugins/beautifier/TODO.md
@@ -0,0 +1,6 @@
+# GTK 4 port
+
+A lot of this plugin needs to be rewrite.
+It should probably use a buffer addin to provide the beautify actions.
+It should probably use an IdeEditorPageAddin to add menu items to the context menu and setup shortcuts.
+It probably needs a preferences addin to setup beautifiers.