[go_router]: implemented helpers for ShellRoute (flutter#2730)

* [Feature]: implemented helpers for ShellRoute

* [bugfix]: change export

* Removed named private constructor for TypedRoute

* Update CHANGELOG.md

* Update pubspec.yaml

* [Feature]: split routes per type

* [Feature]: add new exports

* Tests, refactor routes

* remove line in changelog

* Add navigatorKey for each route

* Fixed tests

* Format

* Bump version in pubspec.yaml

* Update packages/go_router/lib/src/route_data.dart

Co-authored-by: chunhtai <[email protected]>

* Update packages/go_router/lib/src/route_data.dart

Co-authored-by: chunhtai <[email protected]>

* Removed buildPageWithState tests

* Bump version in pubspec

* Address comments from code review

* Export ShellRouteData

* Remove unnecessary import

---------

Co-authored-by: chunhtai <[email protected]>
Co-authored-by: John Ryan <[email protected]>

[extension_gsi] Update extension to support gsi 5 and 6. (flutter#3235)

* [extension_gsi] Support google_sign_in ^5.0.0 and ^6.0.0.

* Update example to google_sign_in ^6.0.0

Also update the index.html to the latest style, and add some changes to
make this build distinguishable from the default one (the + googleapis
bits)

* Fix typo: oath -> oauth

* Update CHANGELOG.

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).

[various] Update flutter/plugins links (flutter#3256)

Updates links and references to `flutter/plugins` to use `flutter/packages` instead, including making the `repository` pubspec.yaml check stricter in the repo tooling to ensure all packages are pointing to the right place.

Exceptions to the updates are:
- Changelog entries.
- Links to pull requests.

This will re-publish all the moved plugins, thus fixing the current redness of `release` (due to the current versions not being tagged in this repository).