Build Lineage Themes stub package

Change-Id: Ia481611d50a805235d132deeb8cee434d5743752
diff --git a/config/common.mk b/config/common.mk
index c59154c..79d9663 100644
--- a/config/common.mk
+++ b/config/common.mk
@@ -144,7 +144,7 @@
     Updater \
     WeatherProvider
 
-# Themes
+# Accents
 PRODUCT_PACKAGES += \
     LineageBlackTheme \
     LineageDarkTheme \
@@ -157,7 +157,11 @@
     LineagePinkAccent \
     LineagePurpleAccent \
     LineageRedAccent \
-    LineageYellowAccent \
+    LineageYellowAccent
+
+# Themes
+PRODUCT_PACKAGES += \
+    LineageThemesStub \
     ThemePicker
 
 # Extra tools in Lineage