feat: add phone field to User model and update authentication flow

- Added phone field to User model in Prisma schema and generated types.
- Updated backend authentication to include phone as an additional field.
- Implemented phone input in the signup form with validation.
- Created a new SignupPage component for user registration.
- Updated routing to include signup path and redirect authenticated users.
- Modified login page to reference Playzer and added link to signup.

apps/frontend/src/routes/__root.tsx

@@ -18,7 +18,7 @@ export const Route = createRootRouteWithContext<RouterContext>()({
 });
 
 const AUTH_PAGE_REGEX =
-  /^\/(login|select-complex|reset-password|onboard|invite|auth-callback)(?:\/|$)/;
+  /^\/(login|signup|select-complex|reset-password|onboard|invite|auth-callback)(?:\/|$)/;
 
 function RootRoute() {
   const location = useLocation();

apps/frontend/src/routes/signup.tsx

@@ -0,0 +1,11 @@
+import { SignupPage } from '@/features/signup/signup-page';
+import { createFileRoute, redirect } from '@tanstack/react-router';
+
+export const Route = createFileRoute('/signup')({
+  beforeLoad: ({ context }) => {
+    if (context.auth.isAuthenticated) {
+      throw redirect({ to: '/' });
+    }
+  },
+  component: SignupPage,
+});