[10.x] Optional field definitions on model (#812)

* Optional field definitions
Check if field definitions has been added on the model and use if that is the case

* Update TypesenseEngine.php

* Update TypesenseEngine.php

---------

Co-authored-by: Morten D. Hansen <mdh@eltwin.com>
Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Engines/TypesenseEngine.php

@@ -501,6 +501,10 @@ protected function getOrCreateCollectionFromModel($model): TypesenseCollection
         } catch (ObjectNotFound $exception) {
             $schema = config('scout.typesense.model-settings.'.get_class($model).'.collection-schema') ?? [];
 
+            if (method_exists($model, 'typesenseCollectionSchema')) {
+                $schema = $model->typesenseCollectionSchema();
+            }
+
             if (! isset($schema['name'])) {
                 $schema['name'] = $model->searchableAs();
             }