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

.github/workflows/upload-models.yaml

@@ -19,12 +19,36 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.8"]
+        python-version: ["3.10"]
 
     steps:
       - uses: actions/checkout@v4
 
+      - name: Zipformer CTC (non-streaming)
+        shell: bash
+        run: |
+          git lfs install
+          names=(
+            sherpa-onnx-zipformer-ctc-zh-int8-2025-07-03
+            sherpa-onnx-zipformer-ctc-zh-2025-07-03
+            sherpa-onnx-zipformer-ctc-zh-fp16-2025-07-03
+          )
+          for name in ${names[@]}; do
+            git clone https://huggingface.co/csukuangfj/$name 
+            pushd $name
+            git lfs pull
+            rm -rf .git
+            rm -rfv .gitattributes
+            ls -lh
+            popd
+
+            tar cjfv $name.tar.bz2 $name
+            rm -rf $name
+            ls -lh *.tar.bz2
+          done
+
       - name: Vietnamese (zipformer)
+        if: false
         shell: bash
         run: |
           rm -rf models
@@ -76,6 +100,7 @@ jobs:
           mv models/* .
 
       - name: Publish to huggingface (Vietnamese zipformer)
+        if: false
         env:
           HF_TOKEN: ${{ secrets.HF_TOKEN }}
         uses: nick-fields/retry@v3