Change appbar color web

[AliEasy]

No description provided.

[CodingWithTashi]

@AliEasy App bar colour depends on the theme of the application, You can change the theme from an application to update color. If you want to change the color manually, I will add this param in the next update

[Raviteja11122]

@CodingWithTashi better to give scanner as widget. If they want to use the scanner as part of the screen or fullscreen they will use height and width params as their needs. Also in some scenarios in my web app there in back button in app bar user will use browser back buttons in that case scanner as widget is very useful instead of screen

[CodingWithTashi]

Closing this issue since a similar issue was raised here.
#18 beside I have added widget, please use SimpleBarcodeScanner widget class