Add action divider and supplemental action functionality to list items.

Bug: 143234489
Test: CarUiListItemTest

Change-Id: Ic699068350516601e239d67296c415ce9ff33978
diff --git a/car-ui-lib/res/layout/car_ui_list_item.xml b/car-ui-lib/res/layout/car_ui_list_item.xml
index 1357e59..dfc15a0 100644
--- a/car-ui-lib/res/layout/car_ui_list_item.xml
+++ b/car-ui-lib/res/layout/car_ui_list_item.xml
@@ -79,6 +79,13 @@
         app:layout_constraintEnd_toEndOf="@id/car_ui_list_item_end_guideline"
         app:layout_constraintTop_toTopOf="parent">
 
+        <View
+            android:id="@+id/action_divider"
+            android:layout_width="@dimen/car_ui_list_item_action_divider_width"
+            android:layout_height="@dimen/car_ui_list_item_action_divider_height"
+            android:background="@drawable/car_ui_list_item_divider"
+            android:layout_gravity="start|center_vertical"/>
+
         <Switch
             android:id="@+id/switch_widget"
             android:layout_width="wrap_content"
@@ -90,6 +97,13 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center" />
+
+        <ImageView
+            android:id="@+id/supplemental_icon"
+            android:layout_width="@dimen/car_ui_list_item_supplemental_icon_size"
+            android:layout_height="@dimen/car_ui_list_item_supplemental_icon_size"
+            android:layout_gravity="center"
+            android:scaleType="fitXY" />
     </FrameLayout>
 
     <androidx.constraintlayout.widget.Guideline