feat: initialize Laravel project with React 19 starter kit (#2001)

* feat: initialize Laravel project with React 19 starter kit

- Add Laravel backend with Inertia.js integration
- Set up React 19 with TypeScript frontend
- Configure shadcn/ui component library
- Add Vite build tooling and development setup
- Include authentication scaffolding with Inertia
- Set up responsive layouts and UI components

* Potential fix for code scanning alert no. 595: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

resources/js/components/app-content.tsx

@@ -0,0 +1,18 @@
+import { SidebarInset } from '@/components/ui/sidebar';
+import * as React from 'react';
+
+interface AppContentProps extends React.ComponentProps<'main'> {
+    variant?: 'header' | 'sidebar';
+}
+
+export function AppContent({ variant = 'header', children, ...props }: AppContentProps) {
+    if (variant === 'sidebar') {
+        return <SidebarInset {...props}>{children}</SidebarInset>;
+    }
+
+    return (
+        <main className="mx-auto flex h-full w-full max-w-7xl flex-1 flex-col gap-4 rounded-xl" {...props}>
+            {children}
+        </main>
+    );
+}