feat: Add public API docs

Author: kristiankunc

app/Providers/Filament/AdminPanelProvider.php

@@ -12,6 +12,7 @@
 use Filament\Http\Middleware\DisableBladeIconComponents;
 use Filament\Http\Middleware\DispatchServingFilamentEvent;
 use Filament\Navigation\NavigationGroup;
+use Filament\Navigation\NavigationItem;
 use Filament\Pages;
 use Filament\Panel;
 use Filament\PanelProvider;
@@ -89,6 +90,13 @@ public function panel(Panel $panel): Panel
             ->pages([
                 Dashboard::class,
             ])
+            ->navigationItems([
+                NavigationItem::make('API Documentation')
+                    ->url('/api/documentation', shouldOpenInNewTab: true)
+                    ->icon('heroicon-o-book-open')
+                    ->group('Developer')
+                    ->sort(10),
+            ])
             ->widgets([
                 MyRoles::class,
                 MyStatus::class,