Initial EventLogTags for CarService.

This CL defines a new project (car-internal-lib) that will contain
internal libraries (such as utilities used by CarService and
CarServiceHelperService).

It also creates a class (com.android.internal.car.EventLogTags)
for car-related event logs, and add the initial logs (for
CarService / ICarImpl and user-related components).

Bug: 149797595
Bug: 153900032

Test: adb logcat -b events -v color | egrep 'car_'

Change-Id: I987ebafdadc39de768d0f053d4c6ea18fd95b169
diff --git a/car-lib/Android.bp b/car-lib/Android.bp
index df7c3b7..6952336 100644
--- a/car-lib/Android.bp
+++ b/car-lib/Android.bp
@@ -88,6 +88,7 @@
         "src/android/car/storagemonitoring/IoStatsEntry.aidl",
     ],
     static_libs: [
+        "android.car.internal.event-log-tags",
         "carwatchdog_aidl_interface-java",
     ],
     product_variables: {