Flutter 3.22 compatibility

[mauriziopinotti]

This PR adds compatibility with Flutter 3.22 and removes a lot of deprecated code, especially for Material theme.

[And96]

Great! We need it. waiting for merge 👍

[cpc6128]

Thank you !

  awesome_select:
    git:
      url: https://github.com/easyhour/flutter_awesome_select.git
      ref: master

[And96]

Thanks. Waiting availability on https://pub.dev/packages/flutter_awesome_select