[5.x] Allow Inertia pages paths modification

[mho22]

Based on the issue #1491. @driesvints suggested to create a PR about this.

Currently it is not possible to modify the paths of Inertia pages like :

api : API/Index
profile : Profile/Show
teams : Teams/Create and Teams/Show

Based on the logic used in Fortify, I proposed to apply methods on the Jetstream class to enable the modification of the rendering behavior for these views.

Fortify logic :

Fortify::loginView(function () {
    return Inertia::render('Auth/Login', [
        'canResetPassword' => Route::has('password.request'),
        'status' => session('status'),
    ]);
});

New methods from Jetstream class :

Jetstream::apiIndexView( ... )
Jetstream::profileShowView( ... )
Jetstream::teamsCreateView( ... )
Jetstream::teamsShowView( ... )

A JetstreamServiceProviderTest file has been created based on FortifyServiceProviderTest.

[taylorotwell]

Thanks for your pull request to Laravel!

Unfortunately, I'm going to delay merging this code for now. To preserve our ability to adequately maintain the framework, we need to be very careful regarding the amount of code we include.

If possible, please consider releasing your code as a package so that the community can still take advantage of your contributions!

If you feel absolutely certain that this code corrects a bug in the framework, please "@" mention me in a follow-up comment with further explanation so that GitHub will send me a notification of your response.