OmniControl: add action org.omnirom.control.intents.LAUNCH

to allow putting OmniControl in Launcher3 default workspace layouts

Change-Id: I805ca3f4bd44be6198d9b22f7fd2e13cb199e105
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d9533eb..df1b0f0 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -24,7 +24,9 @@
             android:label="@string/app_name">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+                <action android:name="org.omnirom.control.intents.LAUNCH" />
 
+                <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>