Add a secondary launcher activity (1/2)

This secondary launcher activity with new category SECONDARY_HOME and
multiple instance supporrted could be used on sencondary display.

Bug: 118206886
Bug: 114329798
Test: Manual
Change-Id: Ibaecf8ef7614389760d0fcc547ef6d378a921583
diff --git a/SecondaryDisplayLauncher/AndroidManifest.xml b/SecondaryDisplayLauncher/AndroidManifest.xml
new file mode 100644
index 0000000..ebf6b02
--- /dev/null
+++ b/SecondaryDisplayLauncher/AndroidManifest.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2018, 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.
+*/
+-->
+<manifest
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.launcher3">
+
+    <application>
+
+        <activity
+            android:name="com.android.launcher3.SecondaryDisplayLauncher"
+            android:theme="@style/SecondaryLauncherTheme"
+            android:launchMode="singleTop"
+            android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|colorMode|density"
+            android:enabled="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.SECONDARY_HOME" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+
+    </application>
+</manifest>