BreakifyDebugBanner
BreakifyDebugBanner displays the current breakpoint during development.
Use enabled, corner and a custom breakpoint configuration as needed. It should normally be disabled in production.
BreakifyDebugBanner( enabled: true, corner: BreakifyBannerCorner.bottomLeft, child: const MyApp(),)The banner resolves its breakpoint from local width and falls back to the BreakifyScope width when the local width is unbounded.

