Fix @MainActor warnings for startRunning/stopRunning

Package.swift

@@ -1,10 +1,17 @@
-// swift-tools-version:5.9
+// swift-tools-version: 5.9
 import PackageDescription
 
 let package = Package(
     name: "CodeScanner",
     platforms: [.iOS(.v13), .macOS(.v10_15), .tvOS(.v13), .visionOS(.v1), .watchOS(.v6)],
     products: [.library(name: "CodeScanner", targets: ["CodeScanner"])],
     dependencies: [],
-    targets: [.target(name: "CodeScanner", dependencies: [])]
-)
+    targets: [
+        .target(
+            name: "CodeScanner",
+            swiftSettings: [
+                .unsafeFlags(["-strict-concurrency=targeted"])
+            ]
+        )
+    ]
+)

Sources/CodeScanner/ScannerViewController.swift

@@ -13,6 +13,7 @@ import UIKit
 @available(macCatalyst 14.0, *)
 extension CodeScannerView {
 
+    @MainActor
     public final class ScannerViewController: UIViewController, UINavigationControllerDelegate {
         private let photoOutput = AVCapturePhotoOutput()
         private var isCapturing = false
@@ -191,9 +192,7 @@ extension CodeScannerView {
             reset()
 
             if !captureSession.isRunning {
-                DispatchQueue.global(qos: .userInteractive).async {
-                    self.captureSession?.startRunning()
-                }
+                captureSession?.startRunning()
             }
         }
 
@@ -294,9 +293,7 @@ extension CodeScannerView {
             super.viewDidDisappear(animated)
 
             if captureSession?.isRunning == true {
-                DispatchQueue.global(qos: .userInteractive).async {
-                    self.captureSession?.stopRunning()
-                }
+                captureSession?.stopRunning()
             }
 
             NotificationCenter.default.removeObserver(self)