flutter_package / fluttertpc_get

change `arguments` to dynamic (roadmap)

- Fixes #441
- I understand `Object` was used, because Flutter's Route arguments uses it. Yet, seems it will not bring any breaking change, beyond removing all type checking to the `arguments` property. So, it gives full freedom (and responsibility) to the developer to make the proper validations.

Check responses in (we might need to validate the usage of extension methods over `dynamic`):
https://stackoverflow.com/questions/31257735/what-is-the-difference-between-dynamic-and-object-in-dart#:~:text=Writing%20dynamic%20o%3B%20declares%20a,except%20that%20it%27s%20an%20Object%20.

fix isNullOrBlank function

fix(num) Fix num issues with operator overloads

[Feature] Ability to use tags with GetX widgets

Fixes subscription for Rx::bindStream

- add docs to bindStream for RxList,RxSet,RxMap,RxImpl.
- fixes the error of binding an ongoing Stream, without closing the Subscription when the observable gets closed.

Fix for Get.create() lifecycle

docs(pt-BR): make dependency management docs of pt-br up to date

Contribution videos and articles in Readme

- adds automatic `onClose()` management to instances created with `Get.create()` (only applies to Routes).
- adds docs for the feature description and limitation.

Replying to an issue spotted by @Quent on Discord, this fixes the lifecycle
( `onInit()`, `onReady()`).
`onClose()` has to be called manually by the dev in the created instance.

chore: Fix example app (missing activity)

update to Getx 3.10.1

Fixes issue described in #569 and #585. `tag` was not being registered for `lazyPut()`;

new README docs section

Minor Code Reduction without affecting functionality