Set up a folder for Chassis lib, with some stub content.

Bug: 139319073
Test: Manual on device
Change-Id: I7b353862474f3149787a6071f8c8ef1539f7844b
diff --git a/car-chassis-lib/README.md b/car-chassis-lib/README.md
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+# Android Automotive 'Chassis' library
+Components and resources designed to increase Automotive UI consistency between
+GAS (Google Automotive Services) apps, system-apps and OEM developed apps.
+
+See: go/aae-chassis
+
+## Content
+
+Components and resources designed to be configured by means of RRO (Runtime
+Resource Overlays) by OEMs.
+
+## Updating
+
+This library is developed in Gerrit and copied as source to Google3 using
+Copybara (go/copybara).
+
+Source: /packages/apps/Car/libs/car-chassis-lib
+Target: //google3/third_party/java/android_libs/android_car_chassis_lib
+
+Here is the process for updating this library:
+
+1. Develop, test and create CL in Gerrit with the desired changes
+2. On Google3, run update.sh and test your changes
+3. Iterate until your changes look okay on both places.
+4. Back on Gerrit, submit your CL
+5. Back on Google3, run update.sh again and submit
+
+TODO: Automate this process using CaaS
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