Add swift online punctuation (#1661)

swift-api-examples/add-punctuation-online.swift

@@ -0,0 +1,35 @@
+func run() {
+    let model = "./sherpa-onnx-online-punct-en-2024-08-06/model.onnx"
+    let bpe = "./sherpa-onnx-online-punct-en-2024-08-06/bpe.vocab"
+    
+    // Create model config
+    let modelConfig = sherpaOnnxOnlinePunctuationModelConfig(
+        cnnBiLstm: model,
+        bpeVocab: bpe
+    )
+    
+    // Create punctuation config
+    var config = sherpaOnnxOnlinePunctuationConfig(model: modelConfig)
+    
+    // Create punctuation instance
+    let punct = SherpaOnnxOnlinePunctuationWrapper(config: &config)
+    
+    // Test texts
+    let textList = [
+        "how are you i am fine thank you",
+        "The African blogosphere is rapidly expanding bringing more voices online in the form of commentaries opinions analyses rants and poetry"
+    ]
+    
+    // Process each text
+  for i in 0..<textList.count {
+    let t = punct.addPunct(text: textList[i])
+    print("\nresult is:\n\(t)")
+  }
+}
+
+@main
+struct App {
+  static func main() {
+    run()
+  }
+}