add java wrapper suppport (#117)

sherpa-onnx/java-api/src/com/k2fsa/sherpa/onnx/OnlineTransducerModelConfig.java

@@ -0,0 +1,48 @@
+/*
+ * // Copyright 2022-2023 by zhaoming
+ */
+
+package com.k2fsa.sherpa.onnx;
+
+public class OnlineTransducerModelConfig {
+  private final String encoder;
+  private final String decoder;
+  private final String joiner;
+  private final String tokens;
+  private final int numThreads;
+  private final boolean debug;
+
+  public OnlineTransducerModelConfig(
+      String encoder, String decoder, String joiner, String tokens, int numThreads, boolean debug) {
+    this.encoder = encoder;
+    this.decoder = decoder;
+    this.joiner = joiner;
+    this.tokens = tokens;
+    this.numThreads = numThreads;
+    this.debug = debug;
+  }
+
+  public String getEncoder() {
+    return encoder;
+  }
+
+  public String getDecoder() {
+    return decoder;
+  }
+
+  public String getJoiner() {
+    return joiner;
+  }
+
+  public String getTokens() {
+    return tokens;
+  }
+
+  public int getNumThreads() {
+    return numThreads;
+  }
+
+  public boolean getDebug() {
+    return debug;
+  }
+}