feat: Ch05 Modulation

Change-Id: I129ed510b31f7dfed6c6213263dba5a6bf111b50
diff --git a/dcs/frames/groups.py b/dcs/frames/groups.py
index 91bdd37..b3c8d10 100644
--- a/dcs/frames/groups.py
+++ b/dcs/frames/groups.py
@@ -17,3 +17,7 @@
 
 class Ch04Group(Group):
     NAME = 'Chapter 04'
+
+
+class Ch05Group(Group):
+    NAME = 'Chapter 05'