feat: add RichEditor component class to site snippets configuration

Author: aspirantzhang

config/filament-site-snippets.php

@@ -7,4 +7,5 @@
     'model' => RectitudeOpen\FilamentSiteSnippets\Models\SiteSnippet::class,
     'navigation_sort' => 0,
     'navigation_icon' => 'heroicon-o-puzzle-piece',
+    'editor_component_class' => \Filament\Forms\Components\RichEditor::class,
 ];