[5.x] Add install:collaboration command

[duncanmcclean]

This pull request introduces a new install:collaboration command which makes it really easy to setup Laravel's broadcast scaffolding, install a broadcast driver (like Laravel Reverb or Pusher) and install the statamic/collaboration package, all in a single command.

Related: laravel/framework#50662

[jasonvarga]

When I run this, I immediately get an error about Pusher because it's not installed.

sandbox on  master [!?] 
→ plz install:collaboration 

   Statamic\Console\Processes\Exceptions\ProcessException 

  ./composer.json has been updated
Running composer update statamic/collaboration --with-dependencies
> Statamic\Console\Composer\Scripts::preUpdateCmd
Loading composer repositories with package information
Dependency statamic/cms is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals
  - Locking statamic/collaboration (dev-statamic-5-support 36d0846)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Installing statamic/collaboration (dev-statamic-5-support 36d0846): Extracting archive
  - Downloading statamic/collaboration (dist)
    Failed to download
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi

   Error 

  Class "Pusher\Pusher" not found

  at vendor/laravel/framework/src/Illuminate/Broadcasting/BroadcastManager.php:306
    302▕      * @return \Pusher\Pusher
    303▕      */
    304▕     public function pusher(array $config)
    305▕     {
  ➜ 306▕         $pusher = new Pusher(

[duncanmcclean]

@jasonvarga It looks like this was happening due to the Collaboration addon's ServiceProvider calling the Broadcast facade which subsequently tried to use the Pusher SDK which hasn't yet been installed.

This would only happen if the BROADCAST_DRIVER was set to pusher (< Laravel 11 apps).

To fix this, I've pushed up a fix which'll prevent composer scripts from running when we initially require statamic/collaboration. I've also included the compatible version of the collaboration addon in the composer require (we should probably take this out before merging / before tagging 5.0).