Create directory for a support library for the Car.

Files will be added in follow-up checkins.

Test: Ensured no breakage to Android Studio gradle project.
Bug: 65492753
Change-Id: I7304b0d65886682bd08ad37bb3ec8f84b9560ab8
diff --git a/settings.gradle b/settings.gradle
index c281bb1..9c335c9 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -103,6 +103,9 @@
 include ':support-content'
 project(':support-content').projectDir = new File(rootDir, 'content')
 
+include ':car'
+project(':car').projectDir = new File(rootDir, 'car')
+
 /////////////////////////////
 //
 // Samples