Load related from memory (#249)

* Load related from memory

* Apply fixes from StyleCI (#250)

Author: binaryk

src/Repositories/Repository.php

@@ -521,9 +521,11 @@ public function resolveRelationships($request): array
                         $paginator = $this->resource->{$relation}()->take($request->input('relatablePerPage') ?? (static::$defaultRelatablePerPage ?? RestifySearchable::DEFAULT_RELATABLE_PER_PAGE))->get();
                     }
 
-                    $withs[$relation] = $paginator->map(fn (Model $item) => [
-                        'attributes' => $item->toArray(),
-                    ]);
+                    $withs[$relation] = $paginator instanceof Collection
+                        ? $paginator->map(fn (Model $item) => [
+                            'attributes' => $item->toArray(),
+                        ])
+                        : $paginator->toArray();
                 }
             }
         });