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

tooling/eslint/package.json

@@ -13,16 +13,16 @@
     "format": "prettier --check \"**/*.{js,json}\""
   },
   "dependencies": {
-    "@next/eslint-plugin-next": "15.5.5",
+    "@next/eslint-plugin-next": "16.0.0-beta.0",
     "@types/eslint": "9.6.1",
-    "eslint-config-next": "15.5.5",
+    "eslint-config-next": "16.0.0-beta.0",
     "eslint-config-turbo": "^2.5.8",
-    "typescript-eslint": "8.45.0"
+    "typescript-eslint": "8.46.2"
   },
   "devDependencies": {
     "@kit/prettier-config": "workspace:*",
     "@kit/tsconfig": "workspace:*",
-    "eslint": "^9.35.0",
+    "eslint": "^9.38.0",
     "typescript": "^5.9.3"
   },
   "prettier": "@kit/prettier-config"