Retain launcher icon on migration from Camera2

* Rename Launcher activity, add original-package

Change-Id: I1478ef1f71aef1a5f29ce233d1baa0e90438888f
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 59c9b55..fc80251 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -7,6 +7,8 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="org.lineageos.aperture">
 
+    <original-package android:name="com.android.camera2" />
+
     <uses-feature android:name="android.hardware.camera.any" />
     <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
 
@@ -49,7 +51,7 @@
         </activity>
 
         <activity-alias
-            android:name=".CameraLauncher"
+            android:name="com.android.camera.CameraLauncher"
             android:exported="true"
             android:label="@string/app_name"
             android:targetActivity=".CameraActivity">