[fix] revert extend class to ShowModelCommand

[alissn]

Hi,

In #1699, the class extension was modified, but it's not correct.

In the attached screenshot, the namespace is Illuminate\Foundation\Console\ShowModelCommand, but the correct namespace is Illuminate\Database\Console\ShowModelCommand and exist file_url

I believe his package has not been updated to the latest version, but the Laravel version has been updated.

This command is based on a Laravel command. The only change made is in the method qualifyModel to locate the Model from the modules folder. For more information, please refer to #1429.