Migrate PostInstall Laravel Prompts

[marcorieser]

Changes proposed in this pull request:
Use Laravel Prompts for PostInstall Script

Issues

• LaravelLang is not available after installation when using CLI. Used current implementation for now.
• There is no interaction (Prompts use the default values) when installing via cli tool (statamic new project studio1902/statamic-peak) (Laravel Prompts in Starter Kit not interactive statamic/cli#62). For now, we reapply the interaction state based on the passed options. But seems a bug in Prompts.

[marcorieser]

Removed the population of language options based on the Laravel Lang package since the classes were not available when installing via CLI. Ended up with a similar approach to the current implementation.

Just for the record (if we ever want to give it another shot to implement it):

protected function selectLanguageToInstall(Collection $installedLanguages): string
{
    return suggest(
        label: 'Handle of language (submit empty when you\'re done)'
        options: fn($value) => collect(\LaravelLang\Locales\Facades\Locales::raw()->available())
            ->filter(fn(string $language) => str_contains($language, $value) && !$installedLanguages->contains($language))
            ->values()
            ->toArray(),
        validate: fn(string $value) => match (true) {
            $value && !\LaravelLang\Locales\Facades\Locales::isAvailable($value) => 'Not supported by Laravel Lang.',
            $value && $installedLanguages->contains($value) => "Language \"{$value}\" already installed."
            default => null,
        },
        hint: $installedLanguages->isNotEmpty() ? 'Installed: ' . $installedLanguages->join(', ', ' and ') : '',
    );
}

[robdekort]

This is awesome. Thank you!