Add GigaAM NeMo transducer model for Russian ASR (#1467)

sherpa-onnx/kotlin-api/OfflineRecognizer.kt

@@ -404,6 +404,19 @@ fun getOfflineModelConfig(type: Int): OfflineModelConfig? {
                 tokens = "$modelDir/tokens.txt",
             )
         }
+
+        20 -> {
+            val modelDir = "sherpa-onnx-nemo-transducer-giga-am-russian-2024-10-24"
+            return OfflineModelConfig(
+                transducer = OfflineTransducerModelConfig(
+                    encoder = "$modelDir/encoder.int8.onnx",
+                    decoder = "$modelDir/decoder.onnx",
+                    joiner = "$modelDir/joiner.onnx",
+                ),
+                tokens = "$modelDir/tokens.txt",
+                modelType = "nemo_transducer",
+            )
+        }
     }
     return null
 }