omni: add default extra font package

Based on template from DU
https://github.com/DirtyUnicorns/android_vendor_du/commit/c5b22c8ffecb8497cc096c135a863b4c8324853f

Thanks to them for the launcher icon too

Noto fonts are from google
https://www.google.com/get/noto/

GoogleSans is from Pixel2
SourceSansPro is from Adobe

Change-Id: I1440d6c51ee25c7e465e83b2f4ec5099f03e741d
diff --git a/config/packages.mk b/config/packages.mk
index 54e6c0b..6d7c23f 100644
--- a/config/packages.mk
+++ b/config/packages.mk
@@ -100,4 +100,8 @@
     Launcher3Dark
 
 # for fun
-PRODUCT_PACKAGES += EggGame
+PRODUCT_PACKAGES += \
+    EggGame
+
+PRODUCT_PACKAGES += \
+    ExtraFonts