Tweaked custom command registration, Added StyleCI fixes

Old command registration method was interfering with default commands,
causing only a limited subset of commands to show overall.
This change follows the method the frameworks uses when loading in from a
directory to prevent issues with run/load order.

app/Interfaces/Deletable.php

@@ -11,4 +11,4 @@ use Illuminate\Database\Eloquent\Relations\MorphMany;
 interface Deletable
 {
     public function deletions(): MorphMany;
-}
+}