Support Filament Panel's Subheading Resource

[elliottschoolcraft]

At the moment, the current set of resources allowed by curator limits us from being able to apply a subheading in the media panel, however, Filament's panels allow for a subheading to be added.

https://filamentphp.com/docs/3.x/panels/pages#adding-a-page-subheading
Filament example: protected ?string $subheading = 'Manage and activate different modules or features.';

Curator Update:
'resources' => [
'label' => 'Media',
'plural_label' => 'Media',
'subheading' => 'Manage and activate different modules or features.',
'navigation_group' => 'Website',
'navigation_icon' => 'heroicon-o-photo',
'navigation_sort' => null,
'navigation_count_badge' => false,
'resource' => \Awcodes\Curator\Resources\MediaResource::class,
],

[awcodes]

Just extend Curator's resource and set the config to use your resource. Then you'll have full control over it.