Create Laravel version with type hint and strict types

[Lisennk]

I think it's time to use PHP 7 features like strict types in new Laravel versions. Also you can transmit code via some compiler, that will produce PHP 5.6 compatible code as alternative.

[GrahamCampbell]

I don't think Laravel will ever be going down this route. Not really by decision though.

NB There are plenty of PHP 5 compatible places that could be repainted that aren't already.

[GrahamCampbell]

Laravel will probably be moving to PHP 7 soon anyway, so no messing about with backporting needed. (soon as in soon enough this stuff's not going to be a concern)

[allanlaal]

@taylorotwell time to reconsider type hints & strict types? :)

[allanlaal]

old laravel/ideas tickets linked to this:

laravel/ideas#2561
laravel/ideas#1409
laravel/ideas#1034
laravel/ideas#284

[allanlaal]

for googlers:

discussion here: #36595
also vote on others:
https://github.com/laravel/framework/discussions?discussions_q=type+hint