Upgrade to React Navigation 6.x

[vknez]

I followed https://reactnavigation.org/docs/upgrading-from-5.x, but there might be things that are not covered. However, this is enough for us to use React Navigation 6 in a not-so-small React Native (ReScript + TypeScript) app.

I upgraded package version from 5.2.0 to 6.0.0.

Closes #43

[Freddy03h]

Ok! I've got time to test it, and it work well, I migrated easily thank's to your work ^^
The only missing things I noted are header and headerShown params in BottomTabs screenOptions.

I think header will need a bigger refactor because Header.t is, for now, to tied to Stack, maybe if we plan to update the binding to use the new @react-navigation/elements package it can be doable. But not mandatory for now.

However it's easy to add ~headerShown: bool=? to options in BottomTabs and I think it's mandatory for anyone using nested navigators.

[vknez]

Thanks @Freddy03h. The fix will follow shortly.

[Freddy03h]

@MoOx do you want to test it too before we merge ?

[MoOx]

No time atm. Let's merge this, I trust you :)