Support non-streaming zipformer CTC ASR models (#2340)

This PR adds support for non-streaming Zipformer CTC ASR models across 
multiple language bindings, WebAssembly, examples, and CI workflows.

- Introduces a new OfflineZipformerCtcModelConfig in C/C++, Python, Swift, Java, Kotlin, Go, Dart, Pascal, and C# APIs
- Updates initialization, freeing, and recognition logic to include Zipformer CTC in WASM and Node.js
- Adds example scripts and CI steps for downloading, building, and running Zipformer CTC models

Model doc is available at
https://k2-fsa.github.io/sherpa/onnx/pretrained_models/offline-ctc/icefall/zipformer.html

harmony-os/SherpaOnnxHar/sherpa_onnx/Index.ets

@@ -15,6 +15,7 @@ export { Samples,
   OfflineTdnnModelConfig,
   OfflineSenseVoiceModelConfig,
   OfflineMoonshineModelConfig,
+  OfflineZipformerCtcModelConfig,
   OfflineModelConfig,
   OfflineLMConfig,
   OfflineRecognizerConfig,

harmony-os/SherpaOnnxHar/sherpa_onnx/src/main/cpp/non-streaming-asr.cc

@@ -45,7 +45,23 @@ static SherpaOnnxOfflineParaformerModelConfig GetOfflineParaformerModelConfig(
   return c;
 }
 
-static SherpaOnnxOfflineDolphinModelConfig GetOfflineDolphinfig(
+static SherpaOnnxOfflineZipformerCtcModelConfig
+GetOfflineZipformerCtcModelConfig(Napi::Object obj) {
+  SherpaOnnxOfflineZipformerCtcModelConfig c;
+  memset(&c, 0, sizeof(c));
+
+  if (!obj.Has("zipformerCtc") || !obj.Get("zipformerCtc").IsObject()) {
+    return c;
+  }
+
+  Napi::Object o = obj.Get("zipformerCtc").As<Napi::Object>();
+
+  SHERPA_ONNX_ASSIGN_ATTR_STR(model, model);
+
+  return c;
+}
+
+static SherpaOnnxOfflineDolphinModelConfig GetOfflineDolphinModelConfig(
     Napi::Object obj) {
   SherpaOnnxOfflineDolphinModelConfig c;
   memset(&c, 0, sizeof(c));
@@ -185,7 +201,8 @@ static SherpaOnnxOfflineModelConfig GetOfflineModelConfig(Napi::Object obj) {
   c.sense_voice = GetOfflineSenseVoiceModelConfig(o);
   c.moonshine = GetOfflineMoonshineModelConfig(o);
   c.fire_red_asr = GetOfflineFireRedAsrModelConfig(o);
-  c.dolphin = GetOfflineDolphinfig(o);
+  c.dolphin = GetOfflineDolphinModelConfig(o);
+  c.zipformer_ctc = GetOfflineZipformerCtcModelConfig(o);
 
   SHERPA_ONNX_ASSIGN_ATTR_STR(tokens, tokens);
   SHERPA_ONNX_ASSIGN_ATTR_INT32(num_threads, numThreads);
@@ -312,6 +329,7 @@ CreateOfflineRecognizerWrapper(const Napi::CallbackInfo &info) {
   SHERPA_ONNX_DELETE_C_STR(c.model_config.fire_red_asr.decoder);
 
   SHERPA_ONNX_DELETE_C_STR(c.model_config.dolphin.model);
+  SHERPA_ONNX_DELETE_C_STR(c.model_config.zipformer_ctc.model);
 
   SHERPA_ONNX_DELETE_C_STR(c.model_config.tokens);
   SHERPA_ONNX_DELETE_C_STR(c.model_config.provider);

harmony-os/SherpaOnnxHar/sherpa_onnx/src/main/ets/components/NonStreamingAsr.ets

@@ -55,6 +55,10 @@ export class OfflineDolphinModelConfig {
   public model: string = '';
 }
 
+export class OfflineZipformerCtcModelConfig {
+  public model: string = '';
+}
+
 export class OfflineWhisperModelConfig {
   public encoder: string = '';
   public decoder: string = '';
@@ -97,6 +101,7 @@ export class OfflineModelConfig {
   public senseVoice: OfflineSenseVoiceModelConfig = new OfflineSenseVoiceModelConfig();
   public moonshine: OfflineMoonshineModelConfig = new OfflineMoonshineModelConfig();
   public dolphin: OfflineDolphinModelConfig = new OfflineDolphinModelConfig();
+  public zipformerCtc: OfflineZipformerCtcModelConfig = new OfflineZipformerCtcModelConfig();
 }
 
 export class OfflineLMConfig {