Use a dummy implementation of Narrator library

JavaApp/src/main/java/com/mojang/text2speech/Text2Speech.java

@@ -0,0 +1,17 @@
+package com.mojang.text2speech;
+
+public class Text2Speech {
+    public static void main(final String[] args) {
+        System.setProperty("jna.library.path", "./src/natives/resources/");
+        final Narrator narrator = Narrator.getNarrator();
+        narrator.say("This is a test", false);
+
+        while (true) {
+            try {
+                Thread.sleep(100);
+            } catch (final InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}