flutter_package / flutter_screenutil

Change BorderRaduisExtension name to BorderRadiusExtension

Change RaduisExtension name to RadiusExtension

edited the typo in the code

there is a mistake in writing the name of the list "responsiveWidgets"

# Conflicts:
#	lib/src/screenutil_init.dart

* Clean codes & add features & fix bugs

Features/Bugs:
- Feature: You can select what classes needs to be rebuilt instead of rebuilding everything, if you have widget A, either addi SU mixin or add 'A' to list ScreenUtilInit.responsiveWidgets
- Feature: Using ScreenUtilInit.builder is optional (use it only when using library in theme)
- Bug: Second call to ScreenUtil.init ignores any existing values and uses the default values when not provided, use ScreenUtil.configure instead
- Bug: ScreenUtil.ensureScreenSize raises an overflow error

* Update version

* Add List of flutter widgets

* Update logic if allowing widget to being rebuilt

* Little code solidity

* Add scale factors: diagonal & diameter

* Add option for how font size should be scaled

* Update support to Dart >= 2.17.0

* Add fontSizeResolver to init + helpers

* Add ensureScreenSize to ScreenUtilInit constructor

* Fix ensureScreenSize on web

* Update Runner.rc

* Add some methods to extensions

* Update widget_test

* Remove extra deps

* Clean code

* Add ensureScreenSizeAndInit + make init sync

* Update README.md

* Update CHANGELOG.md

* Update version to 5.9.0

* Rename version

* Adding tests

* Changing version in CHANGELOG.md

---------

Co-authored-by: Mounir Bouaiche <mounir-b@dba.ma>

Features/Bugs:
- Feature: You can select what classes needs to be rebuilt instead of rebuilding everything, if you have widget A, either addi SU mixin or add 'A' to list ScreenUtilInit.responsiveWidgets
- Feature: Using ScreenUtilInit.builder is optional (use it only when using library in theme)
- Bug: Second call to ScreenUtil.init ignores any existing values and uses the default values when not provided, use ScreenUtil.configure instead
- Bug: ScreenUtil.ensureScreenSize raises an overflow error

* bugifx: 某些情况下键盘无法弹起

* update readme