Getx 4.2.0

[4.2.0] - Big update

This update fixes important bugs as well as integrates with Navigator 2. It also adds GetRouterOutlet, similar to angular RouterOutlet thanks to @ahmednfwela. Also, the documentation translation for Vietnamese (@khangahs) has been added, making the GetX documentation available for 11 different languages, which is just fantastic for any opensource project. GetX has achieved more than 5.4k likes from the pub, and more than 4k stars on github, has videos about it with 48k on youtube, and has communities in the 4 hemispheres of the earth, besides having a large list of contributors as you see bellow. We're all happy to facilitate development with dart and flutter, and that making programming hassle-free has been taken around the world.

Changes in this version:

• Fix: Navigating to the same page with Get.offNamed does not delete the controller from that page using Get.lazyPut.

• Fix Readme GetMiddleware typos
  by @nivisi

• Fix url replace error
  by @KevinZhang19870314

• Changed response default encoding from latin1 to utf8
  by @heftekharm

• Add Duration in ExtensionBottomSheet
  by @chanonpingpong

• Added compatibility with dart-lang/mockito
  by @lifez

• Added extensions methods to convert value in percent value
  by @kauemurakami

• Set darkTheme equal theme when darkTheme is null
  by @eduardoflorence

• Add padding to 'defaultDialog'
  by @KevinZhang19870314

• GraphQLResponse inherit Response info
  by @jasonlaw

• Fix Redundant concatenating base url
  by @jasonlaw

• Add content type and length into the headers when the content type is 'application/x-www-form-urlencoded'
  by @calvingit

• Make withCredentials configurable
  by @jasonlaw

• Fix flutter 2.0 error
  by @yunchiri

• Allow deleting all registered instances
  by @lemps

• Refactor/rx interface notify children
  @by kranfix

• Fixed parameter parsing and middleware sorting
  by @ahmednfwela

• Improvements to router outlet
  by @ahmednfwela

• Minor improvements and bug fixes
  by @ahmednfwela

• Adding route guards and improving navigation
  by @ahmednfwela

• Fix RxInterface.proxy losing its previous value on exception
  by @WillowWisp

• Added dispose() for bottomSheet.
  by @furkankurt

• Added Pull request template
  by @unacorbatanegra

• Fix and update documentation:
  @Farid566,
  @galaxykhh,
  @arslee07,
  @GoStaRoff,
  @BondarenkoArtur,
  @denisrudnei,
  @Charly6596,
  @nateshmbhat,
  @hrithikrtiwari,
  @Undeadlol1,
  @rws08,
  @inuyashaaa,
  @broccolism,
  @aadarshadhakalg,
  @ZeroMinJeon