Use of searchable instead of model breaks integration

[zalito12]

The use of searchable argument in the scout commands, instead of model as the base laravel scout package breaks the integration with other libraries.

For example, the import command:
https://github.com/algolia/scout-extended/blob/master/src/Console/Commands/ImportCommand.php
https://github.com/laravel/scout/blob/10.x/src/Console/ImportCommand.php

Other libraries that use the scout command with model argument breaks when using scout extended. I think the package should use the same command signature to keep the consistency.