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

packages/i18n/package.json

@@ -20,14 +20,14 @@
     "@kit/prettier-config": "workspace:*",
     "@kit/shared": "workspace:*",
     "@kit/tsconfig": "workspace:*",
-    "@tanstack/react-query": "5.90.2",
-    "next": "15.5.5",
-    "react": "19.1.1",
-    "react-dom": "19.1.1",
-    "react-i18next": "^16.0.0"
+    "@tanstack/react-query": "5.90.5",
+    "next": "16.0.0",
+    "react": "19.2.0",
+    "react-dom": "19.2.0",
+    "react-i18next": "^16.1.4"
   },
   "dependencies": {
-    "i18next": "25.5.3",
+    "i18next": "25.6.0",
     "i18next-browser-languagedetector": "8.2.0",
     "i18next-resources-to-backend": "^1.2.1"
   },