Align forward icon throughout the platforms

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/res/drawable/ic_share_action.xml

@@ -0,0 +1,26 @@
+<!--
+    @author Google LLC
+    Copyright (C) 2018 Google LLC
+
+    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"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M21,12L14,5V9C7,10 4,15 3,20C5.5,16.5 9,14.9 14,14.9V19L21,12Z" />
+</vector>

app/src/main/res/menu/chat_message_menu.xml

@@ -10,7 +10,7 @@
 
     <item
         android:id="@+id/action_forward_message"
-        android:icon="@drawable/ic_content_copy"
+        android:icon="@drawable/ic_share_action"
         android:title="@string/nc_forward_message"
         app:showAsAction="always" />
 
@@ -31,4 +31,4 @@
         android:icon="@drawable/ic_delete"
         android:title="@string/nc_delete_message"
         app:showAsAction="always" />
-</menu>
+</menu>