Api tests2 (#5098)

* Cleanup

* API tests for asset models and related cleanup/improvements

* Api license test.  Tests incomplete because create/update/destroy are not implemented yet in the controller

* API Category tests.

* Manufacturers API Test.

* Implement License Create/Update/Delete Methods for API and enable test.

* Add missing gate for api.  Fixes only superadmins being able to generate Personal Access Toekns

app/Http/Transformers/AssetModelsTransformer.php

@@ -34,7 +34,7 @@ class AssetModelsTransformer
                 'id' => (int) $assetmodel->depreciation->id,
                 'name'=> e($assetmodel->depreciation->name)
             ]  : null,
-            'assets_count' => $assetmodel->assets_count,
+            'assets_count' => (int) $assetmodel->assets_count,
             'category' => ($assetmodel->category) ? [
                 'id' => (int) $assetmodel->category->id,
                 'name'=> e($assetmodel->category->name)