add role parameter for tabs

[RobSqui]

Hello,

It would be so great if the library could support the role parameter for tabs in order to be able to add the new search feature :

Here is an example of how it is done in Swift :

https://www.youtube.com/watch?v=zkgVOUytH1g&ab_channel=Kavsoft

[okwasniewski]

Hey, it's already in the works! This PR #364 unlocks it 👍🏻 Also there is already open discussion for that #373