* Adding SiriKit permissions (#1140)

* Adding SiriKit permissions

* Fix tests

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Co-authored-by: Maurits van Beusekom <maurits@vnbskm.nl>

* Reserves the assistant permission on no-op platforms

* Adds support to example application

* Remove pubspec overrides

* Fix formatting

* Revert app facing package to main

* Revert so only platform implementation changes are included

* Add support for Permission.assistant to platforms

* Update permission_handler_android/CHANGELOG.md

Co-authored-by: TimHoogstrate <tim566@hotmail.com>

* Update permission_handler_html/CHANGELOG.md

Co-authored-by: TimHoogstrate <tim566@hotmail.com>

* Update permission_handler_windows/CHANGELOG.md

Co-authored-by: TimHoogstrate <tim566@hotmail.com>

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Co-authored-by: Baptiste DUPUCH <baptiste.dupuch@gmail.com>
Co-authored-by: TimHoogstrate <tim566@hotmail.com>