Add option for only eloquent

[barryvdh]

Summary

I think the Facades are becoming less useful, but you might need the Eloquent facade for the mixin in the models to work properly. This proposes a slimmer version of the file with just Eloquent.

Not really optimized yet but anyways.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Misc. change (internal, infrastructure, maintenance, etc.)

Checklist

• Existing tests have been adapted and/or new tests have been added
• Update the README.md
• Code style has been fixed via composer fix-style