MultiSelectBottomSheetField how to create checkbox select all

[nofure]

[CHB61]

@notufure Hello,

Currently this feature is not included in the widget, you'd have to manage it from outside but I'd like to add a bool parameter checkAllOption that will show a check all checkbox when true.

[mrking01]

now i am unable to do select all

[mrking01]

can you resolve this issueu

[NRMrYang]

Please let me know if this feature is added.
Many thanks

[AhmedA1559]

Hi! I can implement this feature.

[EduSilvaMendonca]

Hi! I can implement this feature.

Please let me know if it's done!

[AhmedA1559]

Hi! I can implement this feature.

Please let me know if it's done!

Already done! #122

[EduSilvaMendonca]

I saw that, but it's not in package... =(
But thanks a lot for implementing this!

[jimmyhuang1992]

@CHB61 Thanks for build this package.
Please review this PR. :)