Add timestamps about streaming models for Swift API (#1113)

@@ -194,6 +194,19 @@ class SherpaOnnxOnlineRecongitionResult {
     }
   }
 
+  var timestamps: [Float] {
+    if let p = result.pointee.timestamps {
+      var timestamps: [Float] = []
+      for index in 0..<count {
+        timestamps.append(p[Int(index)])
+      }
+      return timestamps
+    } else {
+      let timestamps: [Float] = []
+      return timestamps
+    }
+  }
+
   init(result: UnsafePointer<SherpaOnnxOnlineRecognizerResult>!) {
     self.result = result
   }

@@ -91,6 +91,7 @@ func run() {
 
   let result = recognizer.getResult()
   print("\nresult is:\n\(result.text)")
+  print("\nresult is:\n\(result.timestamps)")
 }
 
 @main