Messaging: Use Material You colors

Co-authored-by: Golbinex <2061409-Golbinex@users.noreply.gitlab.com>
Co-authored-by: Semavi Ulusoy <doc.divxm@gmail.com>
Co-authored-by: minarypenguin <alexfinhart@gmail.com>
Co-authored-by: Pranav Vashi <neobuddy89@gmail.com>
Change-Id: Ib3c4b7f17cc48516dafb641fdb03e27135e4d3e8

res/drawable/ic_message.xml

@@ -0,0 +1,24 @@
+<!--
+  ~ 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt"
+    android:viewportWidth="48"
+    android:viewportHeight="48"
+    android:width="24dp"
+    android:height="24dp">
+    <path
+        android:pathData="M40 4H8C5.79 4 4.02 5.79 4.02 8L4 44l8 -8h28c2.21 0 4 -1.79 4 -4V8c0 -2.21 -1.79 -4 -4 -4zM12 18h24v4H12v-4zm16 10H12v-4h16v4zm8 -12H12v-4h24v4z"
+        android:fillColor="#fff" />
+</vector>