Traceur: Add intent category INFO for the main intent.

This is the standard secondary app entry-point for if you don't want the
app to appear in the all apps list.

Bug: 73071676
Test: Tests pass. App still doesn't appear in the all apps list.
Change-Id: I180e15bf53c52d1acc33ac7655848c6da00d5e55
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 93861e2..8d9b095 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -31,6 +31,7 @@
                   android:launchMode="singleTask">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.INFO"/>
             </intent-filter>
             <intent-filter>
                 <action android:name="android.service.quicksettings.action.QS_TILE_PREFERENCES" />