Warning for AVCaptureSession startRunning on Main Thread

[abdorizak]

Dear @AmolGangadhare
Describe the bug
I encountered a warning in this barcode package related to the AVCaptureSession startRunning method being called on the main thread. The warning message advises that this method should ideally be called from a background thread to prevent potential UI unresponsiveness. -[AVCaptureSession startRunning] should be called from background thread. Calling it on the main thread can lead to UI unresponsiveness

To Reproduce
1- Integrate the Flutter barcode package into a Flutter application.
2- Utilize the package to initiate a barcode scanning process.
3- Observe the warning message related to AVCaptureSession startRunning being called on the main thread.

Expected behavior
The AVCaptureSession startRunning method should be invoked from a background thread to avoid any potential UI unresponsiveness.

Screenshots

Additional context
Flutter barcode package version: ^2.0.0
iOS version: iOS 17
Xcode version: Xcode 15

[ohhyungkwon]

Same here.