Add Telecom debug menu.

New menu is accessible via *#*#828282#*#*.  This is a developer settings
type activity for the Telecom subsystem.
Adding in an option to enable the enhanced call blocking functionality
to facilitate testing.

Test: Manual
Bug: 28189985
Change-Id: If7ce957e3e04f8f3de2251bb70dafb6b5834a6d8
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 588e5c3..9202e74 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -288,6 +288,10 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
+        <activity android:name=".ui.TelecomDeveloperMenu"
+                android:label="@string/developer_title"
+                android:exported="false"
+                android:process=":ui" />
 
         <receiver android:name=".components.PrimaryCallReceiver"
                 android:exported="true"