Add support for multiple formats on iOS

@@ -195,13 +195,13 @@ public class SwiftMobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHan
         let facing: Int = argReader.int(key: "facing") ?? 1
         let formats: Array = argReader.intArray(key: "formats") ?? []
         
-        let formatList: NSMutableArray = []
+        if (formats.count != 0) {
+            var barcodeFormats: BarcodeFormat = []
             for index in formats {
-            formatList.add(BarcodeFormat(rawValue: index))
+                barcodeFormats.insert(BarcodeFormat(rawValue: index))
             }
 
-        if (formatList.count != 0) {
-            let barcodeOptions = BarcodeScannerOptions(formats: formatList.firstObject as! BarcodeFormat)
+            let barcodeOptions = BarcodeScannerOptions(formats: barcodeFormats)
             scanner = BarcodeScanner.barcodeScanner(options: barcodeOptions)
         }
         

@@ -49,8 +49,6 @@ class MobileScannerController {
   final bool returnImage;
 
   /// If provided, the scanner will only detect those specific formats.
-  ///
-  /// WARNING: On iOS, only 1 format is supported.
   final List<BarcodeFormat>? formats;
 
   CameraFacing facing;