Add Java and Koltin API for Kokoro TTS 1.0 (#1798)

kotlin-api-examples/test_tts.kt

@@ -3,10 +3,34 @@ package com.k2fsa.sherpa.onnx
 fun main() {
   testVits()
   testMatcha()
-  testKokoro()
+  testKokoroEn()
+  testKokoroZhEn()
 }
 
-fun testKokoro() {
+fun testKokoroZhEn() {
+  // see https://github.com/k2-fsa/sherpa-onnx/releases/tag/tts-models
+  var config = OfflineTtsConfig(
+    model=OfflineTtsModelConfig(
+      kokoro=OfflineTtsKokoroModelConfig(
+        model="./kokoro-multi-lang-v1_0/model.onnx",
+        voices="./kokoro-multi-lang-v1_0/voices.bin",
+        tokens="./kokoro-multi-lang-v1_0/tokens.txt",
+        dataDir="./kokoro-multi-lang-v1_0/espeak-ng-data",
+        dictDir="./kokoro-multi-lang-v1_0/dict",
+        lexicon="./kokoro-multi-lang-v1_0/lexicon-us-en.txt,./kokoro-multi-lang-v1_0/lexicon-zh.txt",
+      ),
+      numThreads=2,
+      debug=true,
+    ),
+  )
+  val tts = OfflineTts(config=config)
+  val audio = tts.generateWithCallback(text="中英文语音合成测试。This is generated by next generation Kaldi using Kokoro without Misaki. 你觉得中英文说的如何呢？", callback=::callback)
+  audio.save(filename="test-kokoro-zh-en.wav")
+  tts.release()
+  println("Saved to test-kokoro-zh-en.wav")
+}
+
+fun testKokoroEn() {
   // see https://github.com/k2-fsa/sherpa-onnx/releases/tag/tts-models
   var config = OfflineTtsConfig(
     model=OfflineTtsModelConfig(