feat: initial schemas-app implementation

- Add Nuxt 4 application with Vuetify UI framework
- Implement GraphQL schema registry management interface
- Add Apollo Client integration with Auth0 authentication
- Create organization and API key management
- Add schema and ref browsing capabilities
- Implement organization switcher for multi-org users
- Add delete functionality for organizations and API keys
- Create Kubernetes deployment descriptors
- Add Docker configuration with nginx

Features:
- Dashboard with organization overview
- Schema browsing by ref with supergraph viewing
- Ref management with schema details
- Settings page for organizations and API keys
- User list per organization with provider icons
- Admin-only organization creation
- Delete confirmations with warnings

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/plugins/auth0.client.ts

@@ -0,0 +1,17 @@
+import { createAuth0 } from '@auth0/auth0-vue'
+
+export default defineNuxtPlugin((nuxtApp) => {
+  const config = useRuntimeConfig()
+
+  const auth0 = createAuth0({
+    domain: config.public.auth0.domain,
+    clientId: config.public.auth0.clientId,
+    authorizationParams: {
+      redirect_uri: window.location.origin,
+      audience: config.public.auth0.audience,
+    },
+    cacheLocation: 'localstorage',
+  })
+
+  nuxtApp.vueApp.use(auth0)
+})