SoundTrigger API improvements.

This CL implements the SoundTrigger API improvements as given in b/22860713. Only the java-level
parts are implemented in this CL.

Key changes include:

* Addition of a SoundTriggerManager/SoundTriggerDetector system API to manage
  the sound-trigger based sound models.
* Addition of a SoundTriggerService service that manages all sound models
  including voice (keyphrase) and sound-trigger based models.
* Includes logic to write sound-trigger based models to the database.
* VoiceInteractionManager service now uses SoundTriggerService instead of
  SoundTriggerHelper.

Bug: 22860713
Change-Id: I7b5c0ed80702527c4460372efeb5e542d3693a69
diff --git a/tests/SoundTriggerTestApp/res/values/strings.xml b/tests/SoundTriggerTestApp/res/values/strings.xml
new file mode 100644
index 0000000..07bac2a
--- /dev/null
+++ b/tests/SoundTriggerTestApp/res/values/strings.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2014 Google Inc.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+
+    <string name="enroll">Enroll</string>
+    <string name="reenroll">Re-enroll</string>
+    <string name="unenroll">Un-enroll</string>
+</resources>
\ No newline at end of file