Removed ZXing from Camera.MAUI and move it into a new project as plugin.

Added Google MLKit as a new project as plugin.

- Rebased barcode to plugin with barcode inherited from plugin.

…e converted image will cause ram overflow and system to crash.

…s camera on app resume (Android & iOS).

Added Vibrate on decoded option.

- Replaced UIGraphics.GetCurrentContext with UIGraphicsImageRenderer (iOS).
- Updated Readme.md

- .NET 8.0 requires iOS SDK 17 which only supported by Xcode 15 where MacOS Ventura is the minimum MacOS version. Older MacBooks are limited to Xcode 14.2 due to this.

…rer()

…meraView.

- In iOS where when ProcessPlugin (previously ProcessQR) is executed, the UI freezes due to the decoding process running on main thread.
- AVCapturePhotoOutput.GetJpegPhotoDataRepresentation is obsolete. Replaced with AVCapturePhoto.FileDataRepresentation.
- Performed Code Cleanup.

- Added additional fixes when camera is mirrored.

- This should also resolve the issue mentioned in hjam40#106.

… plugin.

- CameraView.PluginDecoder and CameraView.PluginDecoders are independent from each other and if both are set, the plugins in both of the properties will be executed.

- The crashes are caused by race conditions due to events raised late. One such example, the user switch from back camera to front and immediately to back again. When switching to front camera an event chain would trigger a start preview but sometimes it wasn't executed before the user switch the camera to back, thus the start preview handler would start a closed or disposed camera. I use "lock" for this purpose.
- Changed CameraProperty, AutoStartPreviewProperty and AutoStartRecordingProperty to two way binding by default.
- Updated CameraChanged to auto start preview/recording if the properties are enabled.

…for Android.

- If torch is enabled, it will attempt to turn it on whenever the active camera is changed.

- Replaced ScalerCropRegion to ControlZoomRatio for Android version 30 and above.
- Fixed the crop region calculation (based on https://stackoverflow.com/a/52570810) where when zoomed with larger value, the crop result is incorrect.

…n the thread limit has reached. In addition to that, plugin defined in PluginDecoder will be excluded from being executed if it also exists in PluginDecoders.

…cured even when the thread limit has reached.