Output switcher panel requires large title icon for Slice slider style

-Add "VIEW_TYPE_SLIDER_LARGE_ICON" to be a new panel type which would enlarge its title icon
-Set "VIEW_TYPE_SLIDER_LARGE_ICON" to MediaOutputPanel and MediaOutputGroupPanel
-Extend slider style and add customized icon size
-Add test cases

Bug: 157208551
Test: make -j42 RunSettingsRoboTests
Change-Id: I9b4de4aa552e8b26e766411f7eff93ea1a2d1910

tests/robotests/src/com/android/settings/panel/VolumePanelTest.java

@@ -70,4 +70,9 @@ public class VolumePanelTest {
     public void getSeeMoreIntent_notNull() {
         assertThat(mPanel.getSeeMoreIntent()).isNotNull();
     }
+
+    @Test
+    public void getViewType_checkType() {
+        assertThat(mPanel.getViewType()).isEqualTo(PanelContent.VIEW_TYPE_SLIDER);
+    }
 }