Add JNI (#57)

.github/scripts/WaveReader.kt

@@ -0,0 +1,17 @@
+package com.k2fsa.sherpa.onnx
+
+import android.content.res.AssetManager
+
+class WaveReader {
+    companion object {
+        // Read a mono wave file.
+        // No resampling is made.
+        external fun readWave(
+            assetManager: AssetManager, filename: String, expected_sample_rate: Float = 16000.0f
+        ): FloatArray?
+
+        init {
+            System.loadLibrary("sherpa-onnx-jni")
+        }
+    }
+}