Prepare release 22.12

Refs: #5250
Change-Id: I6b9a3daab498cbffb78a108207e92bc2596be378
diff --git a/docs/release-notes.rst b/docs/release-notes.rst
new file mode 100644
index 0000000..374bf1a
--- /dev/null
+++ b/docs/release-notes.rst
@@ -0,0 +1,4 @@
+Release Notes
+=============
+
+.. include:: release-notes/release-notes-22.12.rst