Add PhoneManager to expose functionality to phone/dialer apps.

Eventually, this will house the TelecommManager methods.

Change-Id: Id8b08d88a06a7b4e90a4a7f702ba56526e108ca5

telecomm/java/android/telecomm/TelecommManager.java

@@ -25,6 +25,8 @@ import com.android.internal.telecomm.ITelecommService;
 
 /**
  * Provides access to Telecomm-related functionality.
+ * TODO(santoscordon): Move this all into PhoneManager.
+ * @hide
  */
 public class TelecommManager {
     private static final String TAG = "TelecommManager";