Unable to create plugin: replaces must be an array.

[AdrienAdB]

Hi,
On a fresh WinterCMS and Builder plugin install, I am unable to create plugin with the builder.

"The replaces must be an array"

Builder v2.0.1

[AdrienAdB]

Below change did the fix:

https://github.com/wintercms/wn-builder-plugin/blob/main/classes/PluginBaseModel.php#L31

   public $replaces = [];

[LukeTowers]

@AdrienAdB can you submit that in a PR?