Initial include of the CarSystemUI package

This package extends the core SystemUI and adds widgets and windowing
structure useful for the Automotive case.

Bug:110275838
Test: Update a target to include this project, build and deploy
Change-Id: Id70ebe4ed652d6a09ab50b0555fb4471bf3e1d7c
diff --git a/packages/CarSystemUI/proguard.flags b/packages/CarSystemUI/proguard.flags
new file mode 100644
index 0000000..ceb037c
--- /dev/null
+++ b/packages/CarSystemUI/proguard.flags
@@ -0,0 +1 @@
+-keep class com.android.systemui.CarSystemUIFactory