SystemUI: Add app rows to volume dialog

Expand app rows instead of opening a settings panel.
Uses the per-app volume API.

Partially inspired by the patch from Android 11
"SystemUI: Add app volume row to volume dialog"
by cjybyjk <cjybyjk@zjnu.edu.cn>

Change-Id: I3728dfc4f39a06b96abfd571abb8858426e70f45

packages/SystemUI/res/drawable/volume_row_seekbar_progress.xml

@@ -35,11 +35,7 @@
         android:right="@dimen/volume_slider_icon_inset">
         <rotate
             android:fromDegrees="-270"
-            android:toDegrees="-270">
-            <!-- A placeholder drawable is required here - it'll be replaced in code. -->
-            <com.android.systemui.util.AlphaTintDrawableWrapper
-                android:drawable="@drawable/ic_volume_media"
-                android:tint="?androidprv:attr/colorAccentPrimaryVariant" />
-        </rotate>
+            android:toDegrees="-270"
+            android:drawable="@drawable/volume_row_seekbar_progress_icon" />
     </item>
-</layer-list>
\ No newline at end of file
+</layer-list>

packages/SystemUI/res/drawable/volume_row_seekbar_progress_icon.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<com.android.systemui.util.AlphaTintDrawableWrapper
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+    android:drawable="@drawable/ic_volume_media"
+    android:tint="?androidprv:attr/colorAccentPrimaryVariant" />