Next.js 16, React 19.2, Identities page, Invitations identities step, PNPM Catalogs (#381)

* Upgraded to Next.js 16
* Refactored code to comply with React 19.2 ESLint rules
* Refactored some useEffect usages with the new useEffectEvent
* Added Identities page and added second step to set up an identity after accepting an invitation
* Updated all dependencies
* Introduced PNPM catalogs for some frequently updated dependencies
* Bugs fixing and improvements

apps/web/app/auth/sign-in/page.tsx

@@ -12,7 +12,6 @@ import { withI18n } from '~/lib/i18n/with-i18n';
 
 interface SignInPageProps {
   searchParams: Promise<{
-    invite_token?: string;
     next?: string;
   }>;
 }