Allow setting a prefix for Livewire's update and asset urls

[marcusmoore]

Description

This PR allows adding a url prefix to Livewire's update endpoint and javascript asset endpoint.

Fixes #15039

Type of change

• New feature (non-breaking change which adds functionality)

[what-the-diff]

PR Summary

• Added Configuration Parameter Configuration to the prject setup file
  A new parameter LIVEWIRE_URL_PREFIX has been added to the setup file (.env.example). This allows users to predefine some settings during the set-up phase.

• Inclusion of new Service Provider
  A new file named LivewireServiceProvider.php has been added to the app/Providers directory of the project. This service provider is designed to register specific web routes (Livewire routes) to handle updates and serving of the Livewire JavaScript, a part of the functionality within the project.

• Registration of new Service Provider
  The newly added LivewireServiceProvider has also been registered in a configuration file (config/app.php). This lets the application acknowledge this service provider and put it to use.

• Addition of Configuration Parameter to Livewire Configuration
  The LIVEWIRE_URL_PREFIX configuration parameter is further extended to the Livewire configuration file (config/livewire.php) to permit users to modify the part of the URL used for Livewire related network requests and JavaScript assets.